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added the Adaptable functor concepts

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also updated the SGI STL URL's


[SVN r11963]
This commit is contained in:
Jeremy Siek
2001-12-06 22:26:22 +00:00
parent 64b2171140
commit f0d2603a67
6 changed files with 64 additions and 48 deletions
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using_concept_check.htm
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@@ -43,7 +43,7 @@ An example of a concept checking class from the BCCL is the
<tt>EqualityComparableConcept</tt> class. The class corresponds to the
EqualityComparable requirements described in 20.1.1 of the C++
Standard, and to the <a
href="http://www.sgi.com/Technology/STL/EqualityComparable.html">EqualityComparable</a>
href="http://www.sgi.com/tech/stl/EqualityComparable.html">EqualityComparable</a>
concept documented in the SGI STL.
<pre>
@@ -132,10 +132,10 @@ href="./concept_check.htm#motivating-example">motivating example</a>,
one good applicatino of concept checks would be to insert
<tt>function_requires()</tt> at the top of <tt>std::stable_sort()</tt>
to make sure the template parameter type models <a
href="http://www.sgi.com/Technology/STL/RandomAccessIterator.html">
href="http://www.sgi.com/tech/stl/RandomAccessIterator.html">
RandomAccessIterator</a>. In addition, <tt>std::stable_sort()</tt>
requires that the <tt>value_type</tt> of the iterators be
<a href="http://www.sgi.com/Technology/STL/LessThanComparable.html">
<a href="http://www.sgi.com/tech/stl/LessThanComparable.html">
LessThanComparable</a>, so we also use <tt>function_requires()</tt> to
check this.
@@ -182,7 +182,7 @@ type for the map.
As an example of using <tt>BOOST_CLASS_REQUIRES</tt> we look at a concept
check that could be added to <tt>std::vector</tt>. One requirement
that is placed on the element type is that it must be <a
href="http://www.sgi.com/Technology/STL/Assignable.html">Assignable</a>.
href="http://www.sgi.com/tech/stl/Assignable.html">Assignable</a>.
We can check this by inserting
<tt>class_requires&lt;AssignableConcept&lt;T&gt; &gt;</tt> at the top
of the definition for <tt>std::vector</tt>.