operator type traits: added documentation on the limitation to template classes with operator definition that does not bind with all template arguments

[SVN r75084]

doc/has_bit_and.qbk

@@ -26,7 +26,7 @@ f(lhs&rhs); // is valid if has_bit_and<Lhs, Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_bit_and.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_bit_and.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -69,6 +69,40 @@ boost::has_bit_and<A>::value; // this is fine
 boost::has_bit_and<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator&` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_bit_and.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator&(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_bit_and< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g&g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_bit_and< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b&b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_bit_and_assign.qbk

@@ -26,7 +26,7 @@ f(lhs&=rhs); // is valid if has_bit_and_assign<Lhs, Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_bit_and_assign.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_bit_and_assign.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -69,6 +69,40 @@ boost::has_bit_and_assign<A>::value; // this is fine
 boost::has_bit_and_assign<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator&=` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_bit_and_assign.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator&=(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_bit_and_assign< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g&=g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_bit_and_assign< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b&=b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_bit_or.qbk

@@ -26,7 +26,7 @@ f(lhs|rhs); // is valid if has_bit_or<Lhs, Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_bit_or.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_bit_or.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -69,6 +69,40 @@ boost::has_bit_or<A>::value; // this is fine
 boost::has_bit_or<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator|` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_bit_or.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator|(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_bit_or< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g|g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_bit_or< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b|b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_bit_or_assign.qbk

@@ -26,7 +26,7 @@ f(lhs|=rhs); // is valid if has_bit_or_assign<Lhs, Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_bit_or_assign.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_bit_or_assign.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -69,6 +69,40 @@ boost::has_bit_or_assign<A>::value; // this is fine
 boost::has_bit_or_assign<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator|=` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_bit_or_assign.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator|=(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_bit_or_assign< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g|=g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_bit_or_assign< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b|=b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_bit_xor.qbk

@@ -26,7 +26,7 @@ f(lhs^rhs); // is valid if has_bit_xor<Lhs, Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_bit_xor.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_bit_xor.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -69,6 +69,40 @@ boost::has_bit_xor<A>::value; // this is fine
 boost::has_bit_xor<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator^` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_bit_xor.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator^(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_bit_xor< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g^g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_bit_xor< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b^b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_bit_xor_assign.qbk

@@ -26,7 +26,7 @@ f(lhs^=rhs); // is valid if has_bit_xor_assign<Lhs, Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_bit_xor_assign.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_bit_xor_assign.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -69,6 +69,40 @@ boost::has_bit_xor_assign<A>::value; // this is fine
 boost::has_bit_xor_assign<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator^=` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_bit_xor_assign.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator^=(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_bit_xor_assign< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g^=g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_bit_xor_assign< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b^=b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_complement.qbk

@@ -25,7 +25,7 @@ f(~rhs); // is valid if has_complement<Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_complement.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_complement.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -71,6 +71,40 @@ boost::has_complement<A>::value; // this is fine
 boost::has_complement<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator~` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_complement.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator~(const contains<T> &rhs) {
+	return f(rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_complement< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	~g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_complement< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	~b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_dereference.qbk

@@ -25,7 +25,7 @@ f(*rhs); // is valid if has_dereference<Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_dereference.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_dereference.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -74,6 +74,40 @@ boost::has_dereference<A>::value; // this is fine
 boost::has_dereference<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator*` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_dereference.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator*(const contains<T> &rhs) {
+	return f(rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_dereference< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	*g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_dereference< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	*b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_divides.qbk

@@ -26,7 +26,7 @@ f(lhs/rhs); // is valid if has_divides<Lhs, Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_divides.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_divides.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -71,6 +71,40 @@ boost::has_divides<A>::value; // this is fine
 boost::has_divides<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator/` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_divides.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator/(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_divides< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g/g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_divides< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b/b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_divides_assign.qbk

@@ -26,7 +26,7 @@ f(lhs/=rhs); // is valid if has_divides_assign<Lhs, Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_divides_assign.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_divides_assign.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -71,6 +71,40 @@ boost::has_divides_assign<A>::value; // this is fine
 boost::has_divides_assign<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator/=` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_divides_assign.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator/=(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_divides_assign< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g/=g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_divides_assign< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b/=b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_equal_to.qbk

@@ -26,7 +26,7 @@ f(lhs==rhs); // is valid if has_equal_to<Lhs, Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_equal_to.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_equal_to.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -71,6 +71,40 @@ boost::has_equal_to<A>::value; // this is fine
 boost::has_equal_to<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator==` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_equal_to.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator==(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_equal_to< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g==g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_equal_to< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b==b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_greater.qbk

@@ -26,7 +26,7 @@ f(lhs>rhs); // is valid if has_greater<Lhs, Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_greater.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_greater.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -71,6 +71,40 @@ boost::has_greater<A>::value; // this is fine
 boost::has_greater<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator>` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_greater.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator>(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_greater< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g>g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_greater< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b>b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_greater_equal.qbk

@@ -26,7 +26,7 @@ f(lhs>=rhs); // is valid if has_greater_equal<Lhs, Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_greater_equal.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_greater_equal.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -71,6 +71,40 @@ boost::has_greater_equal<A>::value; // this is fine
 boost::has_greater_equal<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator>=` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_greater_equal.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator>=(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_greater_equal< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g>=g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_greater_equal< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b>=b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_left_shift.qbk

@@ -26,7 +26,7 @@ f(lhs<<rhs); // is valid if has_left_shift<Lhs, Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_left_shift.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_left_shift.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -72,6 +72,40 @@ boost::has_left_shift<A>::value; // this is fine
 boost::has_left_shift<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator<<` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_left_shift.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator<<(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_left_shift< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g<<g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_left_shift< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b<<b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_left_shift_assign.qbk

@@ -26,7 +26,7 @@ f(lhs<<=rhs); // is valid if has_left_shift_assign<Lhs, Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_left_shift_assign.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_left_shift_assign.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -69,6 +69,40 @@ boost::has_left_shift_assign<A>::value; // this is fine
 boost::has_left_shift_assign<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator<<=` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_left_shift_assign.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator<<=(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_left_shift_assign< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g<<=g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_left_shift_assign< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b<<=b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_less.qbk

@@ -26,7 +26,7 @@ f(lhs<rhs); // is valid if has_less<Lhs, Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_less.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_less.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -71,6 +71,40 @@ boost::has_less<A>::value; // this is fine
 boost::has_less<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator<` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_less.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator<(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_less< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g<g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_less< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b<b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_less_equal.qbk

@@ -26,7 +26,7 @@ f(lhs<=rhs); // is valid if has_less_equal<Lhs, Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_less_equal.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_less_equal.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -71,6 +71,40 @@ boost::has_less_equal<A>::value; // this is fine
 boost::has_less_equal<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator<=` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_less_equal.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator<=(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_less_equal< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g<=g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_less_equal< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b<=b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_logical_and.qbk

@@ -26,7 +26,7 @@ f(lhs&&rhs); // is valid if has_logical_and<Lhs, Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_logical_and.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_logical_and.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -70,6 +70,40 @@ boost::has_logical_and<A>::value; // this is fine
 boost::has_logical_and<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator&&` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_logical_and.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator&&(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_logical_and< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g&&g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_logical_and< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b&&b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_logical_not.qbk

@@ -25,7 +25,7 @@ f(!rhs); // is valid if has_logical_not<Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_logical_not.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_logical_not.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -70,6 +70,40 @@ boost::has_logical_not<A>::value; // this is fine
 boost::has_logical_not<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator!` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_logical_not.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator!(const contains<T> &rhs) {
+	return f(rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_logical_not< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	!g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_logical_not< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	!b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_logical_or.qbk

@@ -26,7 +26,7 @@ f(lhs||rhs); // is valid if has_logical_or<Lhs, Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_logical_or.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_logical_or.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -70,6 +70,40 @@ boost::has_logical_or<A>::value; // this is fine
 boost::has_logical_or<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator||` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_logical_or.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator||(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_logical_or< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g||g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_logical_or< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b||b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_minus.qbk

@@ -26,7 +26,7 @@ f(lhs-rhs); // is valid if has_minus<Lhs, Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_minus.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_minus.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -71,6 +71,40 @@ boost::has_minus<A>::value; // this is fine
 boost::has_minus<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator-` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_minus.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator-(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_minus< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g-g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_minus< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b-b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_minus_assign.qbk

@@ -26,7 +26,7 @@ f(lhs-=rhs); // is valid if has_minus_assign<Lhs, Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_minus_assign.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_minus_assign.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -71,6 +71,40 @@ boost::has_minus_assign<A>::value; // this is fine
 boost::has_minus_assign<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator-=` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_minus_assign.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator-=(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_minus_assign< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g-=g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_minus_assign< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b-=b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_modulus.qbk

@@ -26,7 +26,7 @@ f(lhs%rhs); // is valid if has_modulus<Lhs, Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_modulus.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_modulus.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -69,6 +69,40 @@ boost::has_modulus<A>::value; // this is fine
 boost::has_modulus<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator%` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_modulus.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator%(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_modulus< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g%g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_modulus< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b%b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_modulus_assign.qbk

@@ -26,7 +26,7 @@ f(lhs%=rhs); // is valid if has_modulus_assign<Lhs, Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_modulus_assign.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_modulus_assign.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -69,6 +69,40 @@ boost::has_modulus_assign<A>::value; // this is fine
 boost::has_modulus_assign<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator%=` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_modulus_assign.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator%=(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_modulus_assign< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g%=g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_modulus_assign< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b%=b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_multiplies.qbk

@@ -26,7 +26,7 @@ f(lhs*rhs); // is valid if has_multiplies<Lhs, Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_multiplies.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_multiplies.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -71,6 +71,40 @@ boost::has_multiplies<A>::value; // this is fine
 boost::has_multiplies<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator*` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_multiplies.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator*(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_multiplies< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g*g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_multiplies< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b*b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_multiplies_assign.qbk

@@ -26,7 +26,7 @@ f(lhs*=rhs); // is valid if has_multiplies_assign<Lhs, Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_multiplies_assign.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_multiplies_assign.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -71,6 +71,40 @@ boost::has_multiplies_assign<A>::value; // this is fine
 boost::has_multiplies_assign<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator*=` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_multiplies_assign.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator*=(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_multiplies_assign< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g*=g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_multiplies_assign< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b*=b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_negate.qbk

@@ -25,7 +25,7 @@ f(-rhs); // is valid if has_negate<Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_negate.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_negate.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -70,6 +70,40 @@ boost::has_negate<A>::value; // this is fine
 boost::has_negate<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator-` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_negate.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator-(const contains<T> &rhs) {
+	return f(rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_negate< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	-g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_negate< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	-b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_not_equal_to.qbk

@@ -26,7 +26,7 @@ f(lhs!=rhs); // is valid if has_not_equal_to<Lhs, Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_not_equal_to.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_not_equal_to.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -71,6 +71,40 @@ boost::has_not_equal_to<A>::value; // this is fine
 boost::has_not_equal_to<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator!=` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_not_equal_to.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator!=(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_not_equal_to< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g!=g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_not_equal_to< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b!=b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_plus.qbk

@@ -26,7 +26,7 @@ f(lhs+rhs); // is valid if has_plus<Lhs, Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_plus.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_plus.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -71,6 +71,40 @@ boost::has_plus<A>::value; // this is fine
 boost::has_plus<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator+` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_plus.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator+(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_plus< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g+g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_plus< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b+b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_plus_assign.qbk

@@ -26,7 +26,7 @@ f(lhs+=rhs); // is valid if has_plus_assign<Lhs, Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_plus_assign.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_plus_assign.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -71,6 +71,40 @@ boost::has_plus_assign<A>::value; // this is fine
 boost::has_plus_assign<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator+=` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_plus_assign.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator+=(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_plus_assign< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g+=g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_plus_assign< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b+=b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_post_decrement.qbk

@@ -25,7 +25,7 @@ f(lhs--); // is valid if has_post_decrement<Lhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_post_decrement.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_post_decrement.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -72,6 +72,40 @@ boost::has_post_decrement<A>::value; // this is fine
 boost::has_post_decrement<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator--` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_post_decrement.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator--(const contains<T> &lhs, int) {
+	return f(lhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_post_decrement< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g--; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_post_decrement< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b--; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_post_increment.qbk

@@ -25,7 +25,7 @@ f(lhs++); // is valid if has_post_increment<Lhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_post_increment.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_post_increment.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -72,6 +72,40 @@ boost::has_post_increment<A>::value; // this is fine
 boost::has_post_increment<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator++` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_post_increment.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator++(const contains<T> &lhs, int) {
+	return f(lhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_post_increment< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g++; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_post_increment< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b++; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_pre_decrement.qbk

@@ -25,7 +25,7 @@ f(--rhs); // is valid if has_pre_decrement<Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_pre_decrement.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_pre_decrement.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -72,6 +72,40 @@ boost::has_pre_decrement<A>::value; // this is fine
 boost::has_pre_decrement<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator--` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_pre_decrement.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator--(const contains<T> &rhs) {
+	return f(rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_pre_decrement< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	--g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_pre_decrement< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	--b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_pre_increment.qbk

@@ -25,7 +25,7 @@ f(++rhs); // is valid if has_pre_increment<Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_pre_increment.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_pre_increment.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -72,6 +72,40 @@ boost::has_pre_increment<A>::value; // this is fine
 boost::has_pre_increment<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator++` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_pre_increment.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator++(const contains<T> &rhs) {
+	return f(rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_pre_increment< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	++g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_pre_increment< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	++b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_right_shift.qbk

@@ -26,7 +26,7 @@ f(lhs>>rhs); // is valid if has_right_shift<Lhs, Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_right_shift.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_right_shift.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -72,6 +72,40 @@ boost::has_right_shift<A>::value; // this is fine
 boost::has_right_shift<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator>>` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_right_shift.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator>>(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_right_shift< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g>>g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_right_shift< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b>>b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_right_shift_assign.qbk

@@ -26,7 +26,7 @@ f(lhs>>=rhs); // is valid if has_right_shift_assign<Lhs, Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_right_shift_assign.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_right_shift_assign.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -69,6 +69,40 @@ boost::has_right_shift_assign<A>::value; // this is fine
 boost::has_right_shift_assign<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator>>=` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_right_shift_assign.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator>>=(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_right_shift_assign< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g>>=g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_right_shift_assign< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b>>=b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_unary_minus.qbk

@@ -25,7 +25,7 @@ f(-rhs); // is valid if has_unary_minus<Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_unary_minus.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_unary_minus.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -70,6 +70,40 @@ boost::has_unary_minus<A>::value; // this is fine
 boost::has_unary_minus<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator-` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_unary_minus.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator-(const contains<T> &rhs) {
+	return f(rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_unary_minus< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	-g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_unary_minus< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	-b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/has_unary_plus.qbk

@@ -25,7 +25,7 @@ f(+rhs); // is valid if has_unary_plus<Rhs, Ret>::value==true
 ``
 If `Ret=void`, the return type is checked to be exactly `void`.
 
-__header `#include <boost/type_traits/has_unary_plus.hpp>` or `#include <boost/type_traits/has_operator.hpp>`
+__header `#include <boost/type_traits/has_unary_plus.hpp>` or `#include <boost/type_traits/has_operator.hpp>` or `#include <boost/type_traits.hpp>`
 
 __examples
 
@@ -70,6 +70,40 @@ boost::has_unary_plus<A>::value; // this is fine
 boost::has_unary_plus<B>::value; // error: ambiguous overload
 ``
 
+* There is an issue when applying this trait to template classes.
+If `operator+` is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+Example:
+``
+#include <boost/type_traits/has_unary_plus.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator+(const contains<T> &rhs) {
+	return f(rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_unary_plus< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	+g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_unary_plus< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	+b; // compile time error
+	return 0;
+}
+``
+
 * `volatile` qualifier is not properly handled and would lead to undefined behavior
 
 [endsect]

doc/html/boost_typetraits/category/value_traits/operators.html

@@ -1334,58 +1334,85 @@
           <a class="link" href="operators.html#boost_typetraits.category.value_traits.operators.known_issues">Known
           issues</a>
         </h6>
-<div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
+<div class="itemizedlist"><ul class="itemizedlist" type="disc">
+<li class="listitem">
               These traits cannot detect whether the operators are public or not:
               if an operator is defined as a private member of type <code class="computeroutput"><span class="identifier">T</span></code> then the instantiation of the corresponding
               trait will produce a compiler error. For this reason these traits cannot
-              be used to determine whether a type has a public operator or not.
-            </li></ul></div>
-<p>
-          
-</p>
+              be used to determine whether a type has a public operator or not. 
 <pre class="programlisting"><span class="keyword">struct</span> <span class="identifier">A</span> <span class="special">{</span> <span class="keyword">private</span><span class="special">:</span> <span class="identifier">A</span> <span class="keyword">operator</span><span class="special">-();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_unary_minus</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: A::operator-() is private</span>
 </pre>
-<p>
-        </p>
-<div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
+            </li>
+<li class="listitem">
               There is an issue if the operator exists only for type <code class="computeroutput"><span class="identifier">A</span></code> and <code class="computeroutput"><span class="identifier">B</span></code>
               is convertible to <code class="computeroutput"><span class="identifier">A</span></code>.
               In this case, the compiler will report an ambiguous overload because
               both the existing operator and the one we provide (with argument of
               type <code class="computeroutput"><span class="identifier">any</span></code>) need type
-              conversion, so that none is preferred.
-            </li></ul></div>
-<p>
-          
-</p>
+              conversion, so that none is preferred. 
 <pre class="programlisting"><span class="keyword">struct</span> <span class="identifier">A</span> <span class="special">{</span> <span class="special">};</span>
 <span class="keyword">void</span> <span class="keyword">operator</span><span class="special">-(</span><span class="keyword">const</span> <span class="identifier">A</span><span class="special">&amp;);</span>
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_unary_minus</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_unary_minus</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload between</span>
-                                           <span class="comment">// operator-(const any&amp;) and</span>
-                                           <span class="comment">// operator-(const A&amp;)</span>
-                                           <span class="comment">// both need type conversion</span>
+                                  <span class="comment">// operator-(const any&amp;) and</span>
+                                  <span class="comment">// operator-(const A&amp;)</span>
+                                  <span class="comment">// both need type conversion</span>
 </pre>
-<p>
-          
-</p>
+              
 <pre class="programlisting"><span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="special">};</span>
 <span class="keyword">struct</span> <span class="identifier">A</span> <span class="special">{</span> <span class="identifier">A</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">B</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span> <span class="special">};</span>
 <span class="keyword">void</span> <span class="keyword">operator</span><span class="special">-(</span><span class="keyword">const</span> <span class="identifier">A</span><span class="special">&amp;);</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_unary_minus</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_unary_minus</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload between</span>
-                                           <span class="comment">// operator-(const any&amp;) and</span>
-                                           <span class="comment">// operator-(const A&amp;)</span>
-                                           <span class="comment">// both need type conversion</span>
+                                  <span class="comment">// operator-(const any&amp;) and</span>
+                                  <span class="comment">// operator-(const A&amp;)</span>
+                                  <span class="comment">// both need type conversion</span>
 </pre>
-<p>
-        </p>
-<div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
+            </li>
+<li class="listitem">
+              There is an issue when applying these traits to template classes. If
+              the operator is defined but does not bind for a given template type,
+              it is still detected by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+              instead of <code class="computeroutput"><span class="keyword">false</span></code>. This
+              applies in particular to the containers of the standard library and
+              <code class="computeroutput"><span class="keyword">operator</span><span class="special">==</span></code>.
+              Example: 
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_equal_to</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">==(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_equal_to</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">==</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_equal_to</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">==</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
+</pre>
+            </li>
+<li class="listitem">
               <code class="computeroutput"><span class="keyword">volatile</span></code> qualifier is
               not properly handled and would lead to undefined behavior
-            </li></ul></div>
+            </li>
+</ul></div>
 <a name="boost_typetraits.category.value_traits.operators.acknowledgments"></a><h6>
 <a name="boost_typetraits.category.value_traits.operators.acknowledgments-heading"></a>
           <a class="link" href="operators.html#boost_typetraits.category.value_traits.operators.acknowledgments">Acknowledgments</a>

doc/html/boost_typetraits/reference/has_bit_and.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_bit_and</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -128,6 +129,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_bit_and</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_bit_and</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">&amp;</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_bit_and</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">&amp;(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_bit_and</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">&amp;</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_bit_and</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">&amp;</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_bit_and_assign.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_bit_and_assign</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -128,6 +129,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_bit_and_assign</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_bit_and_assign</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">&amp;=</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_bit_and_assign</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">&amp;=(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_bit_and_assign</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">&amp;=</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_bit_and_assign</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">&amp;=</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_bit_or.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_bit_or</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -126,6 +127,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_bit_or</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_bit_or</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">|</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_bit_or</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">|(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_bit_or</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">|</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_bit_or</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">|</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_bit_or_assign.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_bit_or_assign</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -128,6 +129,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_bit_or_assign</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_bit_or_assign</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">|=</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_bit_or_assign</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">|=(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_bit_or_assign</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">|=</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_bit_or_assign</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">|=</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_bit_xor.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_bit_xor</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -126,6 +127,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_bit_xor</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_bit_xor</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">^</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_bit_xor</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">^(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_bit_xor</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">^</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_bit_xor</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">^</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_bit_xor_assign.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_bit_xor_assign</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -128,6 +129,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_bit_xor_assign</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_bit_xor_assign</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">^=</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_bit_xor_assign</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">^=(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_bit_xor_assign</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">^=</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_bit_xor_assign</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">^=</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_complement.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_complement</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -135,6 +136,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_complement</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_complement</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">~</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_complement</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">~(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_complement</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="special">~</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_complement</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="special">~</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_dereference.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_dereference</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -144,6 +145,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_dereference</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_dereference</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">*</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_dereference</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">*(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_dereference</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="special">*</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_dereference</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="special">*</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_divides.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_divides</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -132,6 +133,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_divides</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_divides</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">/</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_divides</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">/(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_divides</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">/</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_divides</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">/</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_divides_assign.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_divides_assign</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -134,6 +135,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_divides_assign</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_divides_assign</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">/=</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_divides_assign</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">/=(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_divides_assign</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">/=</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_divides_assign</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">/=</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_equal_to.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_equal_to</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -133,6 +134,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_equal_to</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_equal_to</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">==</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_equal_to</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">==(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_equal_to</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">==</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_equal_to</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">==</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_greater.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_greater</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -133,6 +134,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_greater</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_greater</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">&gt;</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_greater</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">&gt;(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_greater</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">&gt;</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_greater</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">&gt;</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_greater_equal.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_greater_equal</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -133,6 +134,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_greater_equal</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_greater_equal</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">&gt;=</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_greater_equal</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">&gt;=(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_greater_equal</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">&gt;=</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_greater_equal</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">&gt;=</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_left_shift.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_left_shift</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -140,6 +141,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_left_shift</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_left_shift</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">&lt;&lt;</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_left_shift</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">&lt;&lt;(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_left_shift</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">&lt;&lt;</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_left_shift</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">&lt;&lt;</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_left_shift_assign.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_left_shift_assign</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -128,6 +129,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_left_shift_assign</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_left_shift_assign</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">&lt;&lt;=</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_left_shift_assign</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">&lt;&lt;=(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_left_shift_assign</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">&lt;&lt;=</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_left_shift_assign</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">&lt;&lt;=</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_less.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_less</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -133,6 +134,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_less</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_less</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">&lt;</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_less</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">&lt;(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_less</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">&lt;</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_less</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">&lt;</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_less_equal.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_less_equal</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -133,6 +134,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_less_equal</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_less_equal</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">&lt;=</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_less_equal</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">&lt;=(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_less_equal</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">&lt;=</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_less_equal</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">&lt;=</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_logical_and.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_logical_and</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -131,6 +132,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_logical_and</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_logical_and</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">&amp;&amp;</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_logical_and</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">&amp;&amp;(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_logical_and</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">&amp;&amp;</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_logical_and</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">&amp;&amp;</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_logical_not.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_logical_not</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -131,6 +132,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_logical_not</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_logical_not</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">!</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_logical_not</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">!(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_logical_not</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="special">!</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_logical_not</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="special">!</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_logical_or.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_logical_or</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -131,6 +132,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_logical_or</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_logical_or</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">||</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_logical_or</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">||(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_logical_or</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">||</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_logical_or</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">||</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_minus.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_minus</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -132,6 +133,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_minus</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_minus</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">-</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_minus</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">-(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_minus</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">-</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_minus</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">-</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_minus_assign.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_minus_assign</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -134,6 +135,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_minus_assign</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_minus_assign</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">-=</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_minus_assign</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">-=(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_minus_assign</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">-=</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_minus_assign</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">-=</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_modulus.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_modulus</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -125,6 +126,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_modulus</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_modulus</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">%</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_modulus</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">%(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_modulus</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">%</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_modulus</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">%</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_modulus_assign.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_modulus_assign</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -127,6 +128,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_modulus_assign</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_modulus_assign</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">%=</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_modulus_assign</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">%=(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_modulus_assign</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">%=</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_modulus_assign</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">%=</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_multiplies.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_multiplies</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -132,6 +133,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_multiplies</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_multiplies</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">*</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_multiplies</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">*(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_multiplies</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">*</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_multiplies</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">*</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_multiplies_assign.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_multiplies_assign</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -134,6 +135,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_multiplies_assign</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_multiplies_assign</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">*=</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_multiplies_assign</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">*=(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_multiplies_assign</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">*=</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_multiplies_assign</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">*=</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_negate.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_negate</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -131,6 +132,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_negate</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_negate</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">-</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_negate</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">-(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_negate</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="special">-</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_negate</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="special">-</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_not_equal_to.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_not_equal_to</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -133,6 +134,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_not_equal_to</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_not_equal_to</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">!=</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_not_equal_to</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">!=(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_not_equal_to</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">!=</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_not_equal_to</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">!=</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_plus.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_plus</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -132,6 +133,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_plus</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_plus</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">+</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_plus</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">+(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_plus</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">+</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_plus</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">+</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_plus_assign.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_plus_assign</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -134,6 +135,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_plus_assign</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_plus_assign</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">+=</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_plus_assign</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">+=(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_plus_assign</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">+=</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_plus_assign</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">+=</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_post_decrement.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_post_decrement</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -141,6 +142,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_post_decrement</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_post_decrement</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">--</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_post_decrement</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">--(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">int</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_post_decrement</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">--;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_post_decrement</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">--;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_post_increment.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_post_increment</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -141,6 +142,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_post_increment</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_post_increment</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">++</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_post_increment</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">++(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">int</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_post_increment</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">++;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_post_increment</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">++;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_pre_decrement.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_pre_decrement</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -141,6 +142,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_pre_decrement</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_pre_decrement</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">--</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_pre_decrement</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">--(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_pre_decrement</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="special">--</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_pre_decrement</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="special">--</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_pre_increment.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_pre_increment</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -141,6 +142,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_pre_increment</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_pre_increment</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">++</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_pre_increment</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">++(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_pre_increment</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="special">++</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_pre_increment</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="special">++</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_right_shift.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_right_shift</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -140,6 +141,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_right_shift</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_right_shift</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">&gt;&gt;</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_right_shift</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">&gt;&gt;(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_right_shift</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">&gt;&gt;</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_right_shift</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">&gt;&gt;</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_right_shift_assign.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_right_shift_assign</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -132,6 +133,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_right_shift_assign</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_right_shift_assign</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">&gt;&gt;=</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_right_shift_assign</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">&gt;&gt;=(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">lhs</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_right_shift_assign</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="identifier">g</span><span class="special">&gt;&gt;=</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_right_shift_assign</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="identifier">b</span><span class="special">&gt;&gt;=</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_unary_minus.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_unary_minus</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -131,6 +132,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_unary_minus</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_unary_minus</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">-</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_unary_minus</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">-(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_unary_minus</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="special">-</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_unary_minus</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="special">-</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/boost_typetraits/reference/has_unary_plus.html

@@ -60,6 +60,7 @@
         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"><span class="preprocessor">#include</span>
         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_unary_plus</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
         or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+        or <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
       </p>
 <p>
         <span class="bold"><strong>Examples:</strong></span>
@@ -131,6 +132,41 @@
 <span class="keyword">struct</span> <span class="identifier">B</span> <span class="special">{</span> <span class="keyword">operator</span> <span class="identifier">A</span><span class="special">();</span> <span class="special">};</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_unary_plus</span><span class="special">&lt;</span><span class="identifier">A</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// this is fine</span>
 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_unary_plus</span><span class="special">&lt;</span><span class="identifier">B</span><span class="special">&gt;::</span><span class="identifier">value</span><span class="special">;</span> <span class="comment">// error: ambiguous overload</span>
+</pre>
+          </li>
+<li class="listitem">
+            There is an issue when applying this trait to template classes. If <code class="computeroutput"><span class="keyword">operator</span><span class="special">+</span></code>
+            is defined but does not bind for a given template type, it is still detected
+            by the trait which returns <code class="computeroutput"><span class="keyword">true</span></code>
+            instead of <code class="computeroutput"><span class="keyword">false</span></code>. Example:
+            
+<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">has_unary_plus</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">contains</span> <span class="special">{</span> <span class="identifier">T</span> <span class="identifier">data</span><span class="special">;</span> <span class="special">};</span>
+
+<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">+(</span><span class="keyword">const</span> <span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">rhs</span><span class="special">)</span> <span class="special">{</span>
+	<span class="keyword">return</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">rhs</span><span class="special">.</span><span class="identifier">data</span><span class="special">);</span>
+<span class="special">}</span>
+
+<span class="keyword">class</span> <span class="identifier">bad</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">class</span> <span class="identifier">good</span> <span class="special">{</span> <span class="special">};</span>
+<span class="keyword">bool</span> <span class="identifier">f</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">good</span><span class="special">&amp;)</span> <span class="special">{</span> <span class="special">}</span>
+
+<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">boolalpha</span><span class="special">;</span>
+	<span class="comment">// works fine for contains&lt;good&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_unary_plus</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">good</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">good</span><span class="special">&gt;</span> <span class="identifier">g</span><span class="special">;</span>
+	<span class="special">+</span><span class="identifier">g</span><span class="special">;</span> <span class="comment">// ok</span>
+	<span class="comment">// does not work for contains&lt;bad&gt;</span>
+	<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span><span class="special">&lt;&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">has_unary_plus</span><span class="special">&lt;</span> <span class="identifier">contains</span><span class="special">&lt;</span> <span class="identifier">bad</span> <span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">&lt;&lt;</span><span class="char">'\n'</span><span class="special">;</span> <span class="comment">// true, should be false</span>
+	<span class="identifier">contains</span><span class="special">&lt;</span><span class="identifier">bad</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
+	<span class="special">+</span><span class="identifier">b</span><span class="special">;</span> <span class="comment">// compile time error</span>
+	<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
+<span class="special">}</span>
 </pre>
           </li>
 <li class="listitem">

doc/html/index.html

@@ -31,7 +31,7 @@
       Ottosen, Roman Perepelitsa, Robert Ramey, Jeremy Siek, Robert Stewart and Steven
       Watanabe</p></div>
 <div><div class="legalnotice">
-<a name="id3043727"></a><p>
+<a name="id3246830"></a><p>
         Distributed under the Boost Software License, Version 1.0. (See accompanying
         file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
       </p>

doc/html/index/s11.html

@@ -24,7 +24,7 @@
 </div>
 <div class="section">
 <div class="titlepage"><div><div><h2 class="title" style="clear: both">
-<a name="id3187570"></a>Class Index</h2></div></div></div>
+<a name="id3424769"></a>Class Index</h2></div></div></div>
 <p><a class="link" href="s11.html#idx_id_0">A</a> <a class="link" href="s11.html#idx_id_2">C</a> <a class="link" href="s11.html#idx_id_3">D</a> <a class="link" href="s11.html#idx_id_4">E</a> <a class="link" href="s11.html#idx_id_5">F</a> <a class="link" href="s11.html#idx_id_6">H</a> <a class="link" href="s11.html#idx_id_7">I</a> <a class="link" href="s11.html#idx_id_8">M</a> <a class="link" href="s11.html#idx_id_9">N</a> <a class="link" href="s11.html#idx_id_10">O</a> <a class="link" href="s11.html#idx_id_11">P</a> <a class="link" href="s11.html#idx_id_12">R</a> <a class="link" href="s11.html#idx_id_13">T</a></p>
 <div class="variablelist"><dl>
 <dt>
@@ -130,7 +130,13 @@
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_dereference.html" title="has_dereference"><span class="index-entry-level-0">has_dereference</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_divides.html" title="has_divides"><span class="index-entry-level-0">has_divides</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_divides_assign.html" title="has_divides_assign"><span class="index-entry-level-0">has_divides_assign</span></a></p></li>
-<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_equal_to.html" title="has_equal_to"><span class="index-entry-level-0">has_equal_to</span></a></p></li>
+<li class="listitem" style="list-style-type: none">
+<p><span class="index-entry-level-0">has_equal_to</span></p>
+<div class="index"><ul class="index" type="none" compact>
+<li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_equal_to.html" title="has_equal_to"><span class="index-entry-level-1">has_equal_to</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/category/value_traits/operators.html" title="Operator Type Traits"><span class="index-entry-level-1">Operator Type Traits</span></a></p></li>
+</ul></div>
+</li>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_greater.html" title="has_greater"><span class="index-entry-level-0">has_greater</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_greater_equal.html" title="has_greater_equal"><span class="index-entry-level-0">has_greater_equal</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_left_shift.html" title="has_left_shift"><span class="index-entry-level-0">has_left_shift</span></a></p></li>
@@ -337,6 +343,50 @@
 </dt>
 <dd><div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none">
+<p><span class="index-entry-level-0">trait</span></p>
+<div class="index"><ul class="index" type="none" compact>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_bit_and.html" title="has_bit_and"><span class="index-entry-level-1">has_bit_and</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_bit_and_assign.html" title="has_bit_and_assign"><span class="index-entry-level-1">has_bit_and_assign</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_bit_or.html" title="has_bit_or"><span class="index-entry-level-1">has_bit_or</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_bit_or_assign.html" title="has_bit_or_assign"><span class="index-entry-level-1">has_bit_or_assign</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_bit_xor.html" title="has_bit_xor"><span class="index-entry-level-1">has_bit_xor</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_bit_xor_assign.html" title="has_bit_xor_assign"><span class="index-entry-level-1">has_bit_xor_assign</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_complement.html" title="has_complement"><span class="index-entry-level-1">has_complement</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_dereference.html" title="has_dereference"><span class="index-entry-level-1">has_dereference</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_divides.html" title="has_divides"><span class="index-entry-level-1">has_divides</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_divides_assign.html" title="has_divides_assign"><span class="index-entry-level-1">has_divides_assign</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_equal_to.html" title="has_equal_to"><span class="index-entry-level-1">has_equal_to</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_greater.html" title="has_greater"><span class="index-entry-level-1">has_greater</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_greater_equal.html" title="has_greater_equal"><span class="index-entry-level-1">has_greater_equal</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_left_shift.html" title="has_left_shift"><span class="index-entry-level-1">has_left_shift</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_left_shift_assign.html" title="has_left_shift_assign"><span class="index-entry-level-1">has_left_shift_assign</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_less.html" title="has_less"><span class="index-entry-level-1">has_less</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_less_equal.html" title="has_less_equal"><span class="index-entry-level-1">has_less_equal</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_logical_and.html" title="has_logical_and"><span class="index-entry-level-1">has_logical_and</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_logical_not.html" title="has_logical_not"><span class="index-entry-level-1">has_logical_not</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_logical_or.html" title="has_logical_or"><span class="index-entry-level-1">has_logical_or</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_minus.html" title="has_minus"><span class="index-entry-level-1">has_minus</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_minus_assign.html" title="has_minus_assign"><span class="index-entry-level-1">has_minus_assign</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_modulus.html" title="has_modulus"><span class="index-entry-level-1">has_modulus</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_modulus_assign.html" title="has_modulus_assign"><span class="index-entry-level-1">has_modulus_assign</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_multiplies.html" title="has_multiplies"><span class="index-entry-level-1">has_multiplies</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_multiplies_assign.html" title="has_multiplies_assign"><span class="index-entry-level-1">has_multiplies_assign</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_negate.html" title="has_negate"><span class="index-entry-level-1">has_negate</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_not_equal_to.html" title="has_not_equal_to"><span class="index-entry-level-1">has_not_equal_to</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_plus.html" title="has_plus"><span class="index-entry-level-1">has_plus</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_plus_assign.html" title="has_plus_assign"><span class="index-entry-level-1">has_plus_assign</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_post_decrement.html" title="has_post_decrement"><span class="index-entry-level-1">has_post_decrement</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_post_increment.html" title="has_post_increment"><span class="index-entry-level-1">has_post_increment</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_pre_decrement.html" title="has_pre_decrement"><span class="index-entry-level-1">has_pre_decrement</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_pre_increment.html" title="has_pre_increment"><span class="index-entry-level-1">has_pre_increment</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_right_shift.html" title="has_right_shift"><span class="index-entry-level-1">has_right_shift</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_right_shift_assign.html" title="has_right_shift_assign"><span class="index-entry-level-1">has_right_shift_assign</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_unary_minus.html" title="has_unary_minus"><span class="index-entry-level-1">has_unary_minus</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_unary_plus.html" title="has_unary_plus"><span class="index-entry-level-1">has_unary_plus</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/category/value_traits/operators.html" title="Operator Type Traits"><span class="index-entry-level-1">Operator Type Traits</span></a></p></li>
+</ul></div>
+</li>
+<li class="listitem" style="list-style-type: none">
 <p><span class="index-entry-level-0">trait_impl</span></p>
 <div class="index"><ul class="index" type="none" compact><li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/category/value_traits/operators.html" title="Operator Type Traits"><span class="index-entry-level-1">Operator Type Traits</span></a></p></li></ul></div>
 </li>

doc/html/index/s12.html

@@ -24,7 +24,7 @@
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 <div class="section">
 <div class="titlepage"><div><div><h2 class="title" style="clear: both">
-<a name="id3190401"></a>Typedef Index</h2></div></div></div>
+<a name="id3428131"></a>Typedef Index</h2></div></div></div>
 <p><a class="link" href="s12.html#idx_id_20">F</a> <a class="link" href="s12.html#idx_id_27">R</a> <a class="link" href="s12.html#idx_id_28">T</a></p>
 <div class="variablelist"><dl>
 <dt>

doc/html/index/s13.html

@@ -24,7 +24,7 @@
 </div>
 <div class="section">
 <div class="titlepage"><div><div><h2 class="title" style="clear: both">
-<a name="id3190640"></a>Macro Index</h2></div></div></div>
+<a name="id3428370"></a>Macro Index</h2></div></div></div>
 <p><a class="link" href="s13.html#idx_id_31">B</a></p>
 <div class="variablelist"><dl>
 <dt>

doc/html/index/s14.html

@@ -23,7 +23,7 @@
 </div>
 <div class="section">
 <div class="titlepage"><div><div><h2 class="title" style="clear: both">
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+<a name="id3429100"></a>Index</h2></div></div></div>
 <p><a class="link" href="s14.html#idx_id_45">A</a> <a class="link" href="s14.html#idx_id_46">B</a> <a class="link" href="s14.html#idx_id_47">C</a> <a class="link" href="s14.html#idx_id_48">D</a> <a class="link" href="s14.html#idx_id_49">E</a> <a class="link" href="s14.html#idx_id_50">F</a> <a class="link" href="s14.html#idx_id_51">H</a> <a class="link" href="s14.html#idx_id_52">I</a> <a class="link" href="s14.html#idx_id_53">M</a> <a class="link" href="s14.html#idx_id_54">N</a> <a class="link" href="s14.html#idx_id_55">O</a> <a class="link" href="s14.html#idx_id_56">P</a> <a class="link" href="s14.html#idx_id_57">R</a> <a class="link" href="s14.html#idx_id_58">T</a> <a class="link" href="s14.html#idx_id_59">U</a></p>
 <div class="variablelist"><dl>
 <dt>
@@ -279,6 +279,7 @@
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 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_bit_and.html" title="has_bit_and"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_bit_and.html" title="has_bit_and"><span class="index-entry-level-1">has_bit_and</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_bit_and.html" title="has_bit_and"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -286,6 +287,7 @@
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 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_bit_and_assign.html" title="has_bit_and_assign"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_bit_and_assign.html" title="has_bit_and_assign"><span class="index-entry-level-1">has_bit_and_assign</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_bit_and_assign.html" title="has_bit_and_assign"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -293,6 +295,7 @@
 <div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_bit_or.html" title="has_bit_or"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_bit_or.html" title="has_bit_or"><span class="index-entry-level-1">has_bit_or</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_bit_or.html" title="has_bit_or"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -300,6 +303,7 @@
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+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_bit_or_assign.html" title="has_bit_or_assign"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -307,6 +311,7 @@
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 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_bit_xor.html" title="has_bit_xor"><span class="index-entry-level-1">has_bit_xor</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_bit_xor.html" title="has_bit_xor"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -314,6 +319,7 @@
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+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_bit_xor_assign.html" title="has_bit_xor_assign"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -321,6 +327,7 @@
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 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_complement.html" title="has_complement"><span class="index-entry-level-1">has_complement</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_complement.html" title="has_complement"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -328,6 +335,7 @@
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 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_dereference.html" title="has_dereference"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_dereference.html" title="has_dereference"><span class="index-entry-level-1">has_dereference</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_dereference.html" title="has_dereference"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -335,6 +343,7 @@
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 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_divides.html" title="has_divides"><span class="index-entry-level-1">has_divides</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_divides.html" title="has_divides"><span class="index-entry-level-1">trait</span></a></p></li>
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@@ -342,6 +351,7 @@
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 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_divides_assign.html" title="has_divides_assign"><span class="index-entry-level-1">has_divides_assign</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_divides_assign.html" title="has_divides_assign"><span class="index-entry-level-1">trait</span></a></p></li>
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 </li>
 <li class="listitem" style="list-style-type: none">
@@ -349,6 +359,8 @@
 <div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_equal_to.html" title="has_equal_to"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_equal_to.html" title="has_equal_to"><span class="index-entry-level-1">has_equal_to</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/category/value_traits/operators.html" title="Operator Type Traits"><span class="index-entry-level-1">Operator Type Traits</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_equal_to.html" title="has_equal_to"><span class="index-entry-level-1">trait</span></a></p></li>
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@@ -356,6 +368,7 @@
 <div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_greater.html" title="has_greater"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_greater.html" title="has_greater"><span class="index-entry-level-1">has_greater</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_greater.html" title="has_greater"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -363,6 +376,7 @@
 <div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_greater_equal.html" title="has_greater_equal"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_greater_equal.html" title="has_greater_equal"><span class="index-entry-level-1">has_greater_equal</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_greater_equal.html" title="has_greater_equal"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -370,6 +384,7 @@
 <div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_left_shift.html" title="has_left_shift"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_left_shift.html" title="has_left_shift"><span class="index-entry-level-1">has_left_shift</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_left_shift.html" title="has_left_shift"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -377,6 +392,7 @@
 <div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_left_shift_assign.html" title="has_left_shift_assign"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_left_shift_assign.html" title="has_left_shift_assign"><span class="index-entry-level-1">has_left_shift_assign</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_left_shift_assign.html" title="has_left_shift_assign"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -384,6 +400,7 @@
 <div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_less.html" title="has_less"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_less.html" title="has_less"><span class="index-entry-level-1">has_less</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_less.html" title="has_less"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -391,6 +408,7 @@
 <div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_less_equal.html" title="has_less_equal"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_less_equal.html" title="has_less_equal"><span class="index-entry-level-1">has_less_equal</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_less_equal.html" title="has_less_equal"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -398,6 +416,7 @@
 <div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_logical_and.html" title="has_logical_and"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_logical_and.html" title="has_logical_and"><span class="index-entry-level-1">has_logical_and</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_logical_and.html" title="has_logical_and"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -405,6 +424,7 @@
 <div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_logical_not.html" title="has_logical_not"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_logical_not.html" title="has_logical_not"><span class="index-entry-level-1">has_logical_not</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_logical_not.html" title="has_logical_not"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -412,6 +432,7 @@
 <div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_logical_or.html" title="has_logical_or"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_logical_or.html" title="has_logical_or"><span class="index-entry-level-1">has_logical_or</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_logical_or.html" title="has_logical_or"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -419,6 +440,7 @@
 <div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_minus.html" title="has_minus"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_minus.html" title="has_minus"><span class="index-entry-level-1">has_minus</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_minus.html" title="has_minus"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -426,6 +448,7 @@
 <div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_minus_assign.html" title="has_minus_assign"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_minus_assign.html" title="has_minus_assign"><span class="index-entry-level-1">has_minus_assign</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_minus_assign.html" title="has_minus_assign"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -433,6 +456,7 @@
 <div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_modulus.html" title="has_modulus"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_modulus.html" title="has_modulus"><span class="index-entry-level-1">has_modulus</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_modulus.html" title="has_modulus"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -440,6 +464,7 @@
 <div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_modulus_assign.html" title="has_modulus_assign"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_modulus_assign.html" title="has_modulus_assign"><span class="index-entry-level-1">has_modulus_assign</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_modulus_assign.html" title="has_modulus_assign"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -447,6 +472,7 @@
 <div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_multiplies.html" title="has_multiplies"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_multiplies.html" title="has_multiplies"><span class="index-entry-level-1">has_multiplies</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_multiplies.html" title="has_multiplies"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -454,6 +480,7 @@
 <div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_multiplies_assign.html" title="has_multiplies_assign"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_multiplies_assign.html" title="has_multiplies_assign"><span class="index-entry-level-1">has_multiplies_assign</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_multiplies_assign.html" title="has_multiplies_assign"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -461,6 +488,7 @@
 <div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_negate.html" title="has_negate"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_negate.html" title="has_negate"><span class="index-entry-level-1">has_negate</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_negate.html" title="has_negate"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_new_operator.html" title="has_new_operator"><span class="index-entry-level-0">has_new_operator</span></a></p></li>
@@ -494,6 +522,7 @@
 <div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_not_equal_to.html" title="has_not_equal_to"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_not_equal_to.html" title="has_not_equal_to"><span class="index-entry-level-1">has_not_equal_to</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_not_equal_to.html" title="has_not_equal_to"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -505,6 +534,7 @@
 <div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_plus.html" title="has_plus"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_plus.html" title="has_plus"><span class="index-entry-level-1">has_plus</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_plus.html" title="has_plus"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -512,6 +542,7 @@
 <div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_plus_assign.html" title="has_plus_assign"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_plus_assign.html" title="has_plus_assign"><span class="index-entry-level-1">has_plus_assign</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_plus_assign.html" title="has_plus_assign"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -519,6 +550,7 @@
 <div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_post_decrement.html" title="has_post_decrement"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_post_decrement.html" title="has_post_decrement"><span class="index-entry-level-1">has_post_decrement</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_post_decrement.html" title="has_post_decrement"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -526,6 +558,7 @@
 <div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_post_increment.html" title="has_post_increment"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_post_increment.html" title="has_post_increment"><span class="index-entry-level-1">has_post_increment</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_post_increment.html" title="has_post_increment"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -533,6 +566,7 @@
 <div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_pre_decrement.html" title="has_pre_decrement"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_pre_decrement.html" title="has_pre_decrement"><span class="index-entry-level-1">has_pre_decrement</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_pre_decrement.html" title="has_pre_decrement"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -540,6 +574,7 @@
 <div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_pre_increment.html" title="has_pre_increment"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_pre_increment.html" title="has_pre_increment"><span class="index-entry-level-1">has_pre_increment</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_pre_increment.html" title="has_pre_increment"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -547,6 +582,7 @@
 <div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_right_shift.html" title="has_right_shift"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_right_shift.html" title="has_right_shift"><span class="index-entry-level-1">has_right_shift</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_right_shift.html" title="has_right_shift"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -554,6 +590,7 @@
 <div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_right_shift_assign.html" title="has_right_shift_assign"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_right_shift_assign.html" title="has_right_shift_assign"><span class="index-entry-level-1">has_right_shift_assign</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_right_shift_assign.html" title="has_right_shift_assign"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -600,6 +637,7 @@
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_unary_minus.html" title="has_unary_minus"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_unary_minus.html" title="has_unary_minus"><span class="index-entry-level-1">has_unary_minus</span></a></strong></span></p></li>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/category/value_traits/operators.html" title="Operator Type Traits"><span class="index-entry-level-1">Operator Type Traits</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_unary_minus.html" title="has_unary_minus"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
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 <li class="listitem" style="list-style-type: none">
@@ -607,6 +645,7 @@
 <div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_unary_plus.html" title="has_unary_plus"><span class="index-entry-level-1">dont_care</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><span class="bold"><strong><a class="link" href="../boost_typetraits/reference/has_unary_plus.html" title="has_unary_plus"><span class="index-entry-level-1">has_unary_plus</span></a></strong></span></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_unary_plus.html" title="has_unary_plus"><span class="index-entry-level-1">trait</span></a></p></li>
 </ul></div>
 </li>
 <li class="listitem" style="list-style-type: none">
@@ -773,6 +812,7 @@
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/category/value_traits/operators.html" title="Operator Type Traits"><span class="index-entry-level-1">any</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/category/value_traits/operators.html" title="Operator Type Traits"><span class="index-entry-level-1">check</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/category/value_traits/operators.html" title="Operator Type Traits"><span class="index-entry-level-1">dont_care</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/category/value_traits/operators.html" title="Operator Type Traits"><span class="index-entry-level-1">has_equal_to</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/category/value_traits/operators.html" title="Operator Type Traits"><span class="index-entry-level-1">has_operator</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/category/value_traits/operators.html" title="Operator Type Traits"><span class="index-entry-level-1">has_unary_minus</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/category/value_traits/operators.html" title="Operator Type Traits"><span class="index-entry-level-1">integral_constant</span></a></p></li>
@@ -786,6 +826,7 @@
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/category/value_traits/operators.html" title="Operator Type Traits"><span class="index-entry-level-1">Rhs_nocv</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/category/value_traits/operators.html" title="Operator Type Traits"><span class="index-entry-level-1">Rhs_noptr</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/category/value_traits/operators.html" title="Operator Type Traits"><span class="index-entry-level-1">Rhs_noref</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/category/value_traits/operators.html" title="Operator Type Traits"><span class="index-entry-level-1">trait</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/category/value_traits/operators.html" title="Operator Type Traits"><span class="index-entry-level-1">trait_impl</span></a></p></li>
 <li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/category/value_traits/operators.html" title="Operator Type Traits"><span class="index-entry-level-1">trait_impl1</span></a></p></li>
 </ul></div>
@@ -861,6 +902,50 @@
 </dt>
 <dd><div class="index"><ul class="index" type="none" compact>
 <li class="listitem" style="list-style-type: none">
+<p><span class="index-entry-level-0">trait</span></p>
+<div class="index"><ul class="index" type="none" compact>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_bit_and.html" title="has_bit_and"><span class="index-entry-level-1">has_bit_and</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_bit_and_assign.html" title="has_bit_and_assign"><span class="index-entry-level-1">has_bit_and_assign</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_bit_or.html" title="has_bit_or"><span class="index-entry-level-1">has_bit_or</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_bit_or_assign.html" title="has_bit_or_assign"><span class="index-entry-level-1">has_bit_or_assign</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_bit_xor.html" title="has_bit_xor"><span class="index-entry-level-1">has_bit_xor</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_bit_xor_assign.html" title="has_bit_xor_assign"><span class="index-entry-level-1">has_bit_xor_assign</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_complement.html" title="has_complement"><span class="index-entry-level-1">has_complement</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_dereference.html" title="has_dereference"><span class="index-entry-level-1">has_dereference</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_divides.html" title="has_divides"><span class="index-entry-level-1">has_divides</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_divides_assign.html" title="has_divides_assign"><span class="index-entry-level-1">has_divides_assign</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_equal_to.html" title="has_equal_to"><span class="index-entry-level-1">has_equal_to</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_greater.html" title="has_greater"><span class="index-entry-level-1">has_greater</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_greater_equal.html" title="has_greater_equal"><span class="index-entry-level-1">has_greater_equal</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_left_shift.html" title="has_left_shift"><span class="index-entry-level-1">has_left_shift</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_left_shift_assign.html" title="has_left_shift_assign"><span class="index-entry-level-1">has_left_shift_assign</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_less.html" title="has_less"><span class="index-entry-level-1">has_less</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_less_equal.html" title="has_less_equal"><span class="index-entry-level-1">has_less_equal</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_logical_and.html" title="has_logical_and"><span class="index-entry-level-1">has_logical_and</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_logical_not.html" title="has_logical_not"><span class="index-entry-level-1">has_logical_not</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_logical_or.html" title="has_logical_or"><span class="index-entry-level-1">has_logical_or</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_minus.html" title="has_minus"><span class="index-entry-level-1">has_minus</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_minus_assign.html" title="has_minus_assign"><span class="index-entry-level-1">has_minus_assign</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_modulus.html" title="has_modulus"><span class="index-entry-level-1">has_modulus</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_modulus_assign.html" title="has_modulus_assign"><span class="index-entry-level-1">has_modulus_assign</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_multiplies.html" title="has_multiplies"><span class="index-entry-level-1">has_multiplies</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_multiplies_assign.html" title="has_multiplies_assign"><span class="index-entry-level-1">has_multiplies_assign</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_negate.html" title="has_negate"><span class="index-entry-level-1">has_negate</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_not_equal_to.html" title="has_not_equal_to"><span class="index-entry-level-1">has_not_equal_to</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_plus.html" title="has_plus"><span class="index-entry-level-1">has_plus</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_plus_assign.html" title="has_plus_assign"><span class="index-entry-level-1">has_plus_assign</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_post_decrement.html" title="has_post_decrement"><span class="index-entry-level-1">has_post_decrement</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_post_increment.html" title="has_post_increment"><span class="index-entry-level-1">has_post_increment</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_pre_decrement.html" title="has_pre_decrement"><span class="index-entry-level-1">has_pre_decrement</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_pre_increment.html" title="has_pre_increment"><span class="index-entry-level-1">has_pre_increment</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_right_shift.html" title="has_right_shift"><span class="index-entry-level-1">has_right_shift</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_right_shift_assign.html" title="has_right_shift_assign"><span class="index-entry-level-1">has_right_shift_assign</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_unary_minus.html" title="has_unary_minus"><span class="index-entry-level-1">has_unary_minus</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/has_unary_plus.html" title="has_unary_plus"><span class="index-entry-level-1">has_unary_plus</span></a></p></li>
+<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/category/value_traits/operators.html" title="Operator Type Traits"><span class="index-entry-level-1">Operator Type Traits</span></a></p></li>
+</ul></div>
+</li>
+<li class="listitem" style="list-style-type: none">
 <p><span class="index-entry-level-0">trait_impl</span></p>
 <div class="index"><ul class="index" type="none" compact><li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/category/value_traits/operators.html" title="Operator Type Traits"><span class="index-entry-level-1">Operator Type Traits</span></a></p></li></ul></div>
 </li>

doc/operators.qbk

@@ -425,7 +425,6 @@ if an operator is defined as a private member of type `T` then
 the instantiation of the corresponding trait will produce a compiler error.
 For this reason these traits cannot be used to determine whether a type has a
 public operator or not.
-
 ``
 struct A { private: A operator-(); };
 boost::has_unary_minus<A>::value; // error: A::operator-() is private
@@ -435,16 +434,15 @@ boost::has_unary_minus<A>::value; // error: A::operator-() is private
 convertible to `A`. In this case, the compiler will report an ambiguous overload
 because both the existing operator and the one we provide (with argument of type
 `any`) need type conversion, so that none is preferred.
-
 ``
 struct A { };
 void operator-(const A&);
 struct B { operator A(); };
 boost::has_unary_minus<A>::value; // this is fine
 boost::has_unary_minus<B>::value; // error: ambiguous overload between
-                                           // operator-(const any&) and
-                                           // operator-(const A&)
-                                           // both need type conversion
+                                  // operator-(const any&) and
+                                  // operator-(const A&)
+                                  // both need type conversion
 ``
 ``
 struct B { };
@@ -452,9 +450,44 @@ struct A { A(const B&) { } };
 void operator-(const A&);
 boost::has_unary_minus<A>::value; // this is fine
 boost::has_unary_minus<B>::value; // error: ambiguous overload between
-                                           // operator-(const any&) and
-                                           // operator-(const A&)
-                                           // both need type conversion
+                                  // operator-(const any&) and
+                                  // operator-(const A&)
+                                  // both need type conversion
+``
+
+* There is an issue when applying these traits to template classes.
+If the operator is defined but does not bind for a given template type,
+it is still detected by the trait which returns `true` instead of `false`.
+This applies in particular to the containers of the standard library and `operator==`.
+Example:
+``
+#include <boost/type_traits/has_equal_to.hpp>
+#include <iostream>
+
+template <class T>
+struct contains { T data; };
+
+template <class T>
+bool operator==(const contains<T> &lhs, const contains<T> &rhs) {
+	return f(lhs.data, rhs.data);
+}
+
+class bad { };
+class good { };
+bool f(const good&, const good&) { }
+
+int main() {
+	std::cout<<std::boolalpha;
+	// works fine for contains<good>
+	std::cout<<boost::has_equal_to< contains< good > >::value<<'\n'; // true
+	contains<good> g;
+	g==g; // ok
+	// does not work for contains<bad>
+	std::cout<<boost::has_equal_to< contains< bad > >::value<<'\n'; // true, should be false
+	contains<bad> b;
+	b==b; // compile time error
+	return 0;
+}
 ``
 
 * `volatile` qualifier is not properly handled and would lead to undefined behavior