diff --git a/doc/27_ref_optional_synopsis.qbk b/doc/27_ref_optional_synopsis.qbk index f93076e..1a6a849 100644 --- a/doc/27_ref_optional_synopsis.qbk +++ b/doc/27_ref_optional_synopsis.qbk @@ -182,6 +182,8 @@ They are empty, trivially copyable classes with disabled default constructor. T const* get_ptr() const ; ``[link reference_optional_get_ptr __GO_TO__]`` T* get_ptr() ; ``[link reference_optional_get_ptr __GO_TO__]`` + bool has_value() const noexcept ; ``[link reference_optional_operator_bool __GO_TO__]`` + explicit operator bool() const noexcept ; ``[link reference_optional_operator_bool __GO_TO__]`` bool operator!() const noexcept ; ``[link reference_optional_operator_not __GO_TO__]`` @@ -256,6 +258,8 @@ They are empty, trivially copyable classes with disabled default constructor. T* get_ptr() const noexcept ; ``[link reference_optional_ref_get_ptr __GO_TO__]`` + bool has_value() const noexcept ; ``[link reference_optional_ref_operator_bool __GO_TO__]`` + explicit operator bool() const noexcept ; ``[link reference_optional_ref_operator_bool __GO_TO__]`` bool operator!() const noexcept ; ``[link reference_optional_ref_operator_not __GO_TO__]`` diff --git a/doc/28_ref_optional_semantics.qbk b/doc/28_ref_optional_semantics.qbk index 7e2740c..8c1397f 100644 --- a/doc/28_ref_optional_semantics.qbk +++ b/doc/28_ref_optional_semantics.qbk @@ -754,6 +754,7 @@ __SPACE__ [#reference_optional_operator_bool] [: `explicit optional::operator bool() const noexcept ;`] +[: `bool optional::has_value() const noexcept ;`] * [*Returns:] `get_ptr() != 0`. * [*Notes:] On compilers that do not support explicit conversion operators this falls back to safe-bool idiom. @@ -1040,6 +1041,7 @@ __SPACE__ __SPACE__ [#reference_optional_ref_operator_bool] +[: `bool has_value() const noexcept;`] [: `optional::operator bool () const noexcept;`] * [*Returns:] `bool(ref)`. diff --git a/doc/91_relnotes.qbk b/doc/91_relnotes.qbk index d34861b..93e9799 100644 --- a/doc/91_relnotes.qbk +++ b/doc/91_relnotes.qbk @@ -11,6 +11,11 @@ [section:relnotes Release Notes] +[heading Boost Release 1.68] + +* Added member function `has_value()` for compatibility with `std::optional` ([@https://github.com/boostorg/optional/issues/52 issue #52]). + + [heading Boost Release 1.67] * Fixed [@https://github.com/boostorg/optional/issues/46 issue #46]. diff --git a/doc/html/boost_optional/acknowledgements.html b/doc/html/boost_optional/acknowledgements.html index 9d07002..f91a9f2 100644 --- a/doc/html/boost_optional/acknowledgements.html +++ b/doc/html/boost_optional/acknowledgements.html @@ -3,7 +3,7 @@ Acknowledgements - + diff --git a/doc/html/boost_optional/dependencies_and_portability.html b/doc/html/boost_optional/dependencies_and_portability.html index 24d0038..ca54b86 100644 --- a/doc/html/boost_optional/dependencies_and_portability.html +++ b/doc/html/boost_optional/dependencies_and_portability.html @@ -3,7 +3,7 @@ Dependencies and Portability - + diff --git a/doc/html/boost_optional/dependencies_and_portability/emplace_operations_in_older_compilers.html b/doc/html/boost_optional/dependencies_and_portability/emplace_operations_in_older_compilers.html index 2354e2e..afa139f 100644 --- a/doc/html/boost_optional/dependencies_and_portability/emplace_operations_in_older_compilers.html +++ b/doc/html/boost_optional/dependencies_and_portability/emplace_operations_in_older_compilers.html @@ -3,7 +3,7 @@ Emplace operations in older compilers - + diff --git a/doc/html/boost_optional/dependencies_and_portability/optional_reference_binding.html b/doc/html/boost_optional/dependencies_and_portability/optional_reference_binding.html index cffa160..9038cb2 100644 --- a/doc/html/boost_optional/dependencies_and_portability/optional_reference_binding.html +++ b/doc/html/boost_optional/dependencies_and_portability/optional_reference_binding.html @@ -3,7 +3,7 @@ Optional Reference Binding - + diff --git a/doc/html/boost_optional/quick_start.html b/doc/html/boost_optional/quick_start.html index d7dde63..18ea040 100644 --- a/doc/html/boost_optional/quick_start.html +++ b/doc/html/boost_optional/quick_start.html @@ -3,7 +3,7 @@ Quick Start - + diff --git a/doc/html/boost_optional/quick_start/bypassing_unnecessary_default_construction.html b/doc/html/boost_optional/quick_start/bypassing_unnecessary_default_construction.html index 7ccdb1b..2b38395 100644 --- a/doc/html/boost_optional/quick_start/bypassing_unnecessary_default_construction.html +++ b/doc/html/boost_optional/quick_start/bypassing_unnecessary_default_construction.html @@ -3,7 +3,7 @@ Bypassing unnecessary default construction - + diff --git a/doc/html/boost_optional/quick_start/optional_automatic_variables.html b/doc/html/boost_optional/quick_start/optional_automatic_variables.html index e135be1..b292f0a 100644 --- a/doc/html/boost_optional/quick_start/optional_automatic_variables.html +++ b/doc/html/boost_optional/quick_start/optional_automatic_variables.html @@ -3,7 +3,7 @@ Optional automatic variables - + diff --git a/doc/html/boost_optional/quick_start/optional_data_members.html b/doc/html/boost_optional/quick_start/optional_data_members.html index 93682f8..8402401 100644 --- a/doc/html/boost_optional/quick_start/optional_data_members.html +++ b/doc/html/boost_optional/quick_start/optional_data_members.html @@ -3,7 +3,7 @@ Optional data members - + diff --git a/doc/html/boost_optional/quick_start/storage_in_containers.html b/doc/html/boost_optional/quick_start/storage_in_containers.html index 4861178..36e3191 100644 --- a/doc/html/boost_optional/quick_start/storage_in_containers.html +++ b/doc/html/boost_optional/quick_start/storage_in_containers.html @@ -3,7 +3,7 @@ Storage in containers - + diff --git a/doc/html/boost_optional/reference/header__boost_optional_bad_optional_access_hpp_.html b/doc/html/boost_optional/reference/header__boost_optional_bad_optional_access_hpp_.html index 4269965..56d43fc 100644 --- a/doc/html/boost_optional/reference/header__boost_optional_bad_optional_access_hpp_.html +++ b/doc/html/boost_optional/reference/header__boost_optional_bad_optional_access_hpp_.html @@ -3,7 +3,7 @@ Header <boost/optional/bad_optional_access.hpp> - + diff --git a/doc/html/boost_optional/reference/header__boost_optional_bad_optional_access_hpp_/detailed_semantics.html b/doc/html/boost_optional/reference/header__boost_optional_bad_optional_access_hpp_/detailed_semantics.html index ba66f61..e85abc9 100644 --- a/doc/html/boost_optional/reference/header__boost_optional_bad_optional_access_hpp_/detailed_semantics.html +++ b/doc/html/boost_optional/reference/header__boost_optional_bad_optional_access_hpp_/detailed_semantics.html @@ -3,7 +3,7 @@ Detailed semantics - + diff --git a/doc/html/boost_optional/reference/header__boost_optional_hpp_.html b/doc/html/boost_optional/reference/header__boost_optional_hpp_.html index 2a81a82..f3a3649 100644 --- a/doc/html/boost_optional/reference/header__boost_optional_hpp_.html +++ b/doc/html/boost_optional/reference/header__boost_optional_hpp_.html @@ -3,7 +3,7 @@ Header <boost/optional.hpp> - + diff --git a/doc/html/boost_optional/reference/header__boost_optional_optional_fwd_hpp_.html b/doc/html/boost_optional/reference/header__boost_optional_optional_fwd_hpp_.html index f053e06..96f41a2 100644 --- a/doc/html/boost_optional/reference/header__boost_optional_optional_fwd_hpp_.html +++ b/doc/html/boost_optional/reference/header__boost_optional_optional_fwd_hpp_.html @@ -3,7 +3,7 @@ Header <boost/optional/optional_fwd.hpp> - + diff --git a/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/detailed_semantics___free_functions.html b/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/detailed_semantics___free_functions.html index 1a48614..5b0780b 100644 --- a/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/detailed_semantics___free_functions.html +++ b/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/detailed_semantics___free_functions.html @@ -3,7 +3,7 @@ Detailed Semantics - Free Functions - + diff --git a/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/detailed_semantics___optional_references.html b/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/detailed_semantics___optional_references.html index ffe1733..4400216 100644 --- a/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/detailed_semantics___optional_references.html +++ b/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/detailed_semantics___optional_references.html @@ -3,7 +3,7 @@ Detailed Semantics - Optional References - + @@ -422,6 +422,9 @@ space

+ bool has_value() const noexcept; +

+

optional<T&>::operator bool () const noexcept; diff --git a/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/detailed_semantics___optional_values.html b/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/detailed_semantics___optional_values.html index b18c618..fd94a67 100644 --- a/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/detailed_semantics___optional_values.html +++ b/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/detailed_semantics___optional_values.html @@ -3,7 +3,7 @@ Detailed Semantics - Optional Values - + @@ -1592,6 +1592,9 @@ const noexcept ;

+

+ bool optional<T>::has_value() const noexcept ; +

  • Returns: get_ptr() != 0. diff --git a/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/header_optional_in_place_init.html b/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/header_optional_in_place_init.html index 8f1560e..d94a2b2 100644 --- a/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/header_optional_in_place_init.html +++ b/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/header_optional_in_place_init.html @@ -3,7 +3,7 @@ Initialization tags - + diff --git a/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/header_optional_optional_refs.html b/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/header_optional_optional_refs.html index ee518a4..f02cdb5 100644 --- a/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/header_optional_optional_refs.html +++ b/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/header_optional_optional_refs.html @@ -3,7 +3,7 @@ Optional References - + @@ -75,6 +75,8 @@ T* get_ptr() const noexcept ; R + bool has_value() const noexcept ; R + explicit operator bool() const noexcept ; R bool operator!() const noexcept ; R diff --git a/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/header_optional_optional_values.html b/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/header_optional_optional_values.html index 172da40..7780abd 100644 --- a/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/header_optional_optional_values.html +++ b/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/header_optional_optional_values.html @@ -3,7 +3,7 @@ Optional Values - + @@ -108,6 +108,8 @@ T const* get_ptr() const ; R T* get_ptr() ; R + bool has_value() const noexcept ; R + explicit operator bool() const noexcept ; R bool operator!() const noexcept ; R diff --git a/doc/html/boost_optional/reference/io_header.html b/doc/html/boost_optional/reference/io_header.html index 675e598..78bcfd9 100644 --- a/doc/html/boost_optional/reference/io_header.html +++ b/doc/html/boost_optional/reference/io_header.html @@ -3,7 +3,7 @@ Header <boost/optional/optional_io.hpp> - + diff --git a/doc/html/boost_optional/reference/io_header/io_semantics.html b/doc/html/boost_optional/reference/io_header/io_semantics.html index d286c9d..13b7477 100644 --- a/doc/html/boost_optional/reference/io_header/io_semantics.html +++ b/doc/html/boost_optional/reference/io_header/io_semantics.html @@ -3,7 +3,7 @@ Detailed semantics - + diff --git a/doc/html/boost_optional/relnotes.html b/doc/html/boost_optional/relnotes.html index 9881def..7eb48e0 100644 --- a/doc/html/boost_optional/relnotes.html +++ b/doc/html/boost_optional/relnotes.html @@ -3,7 +3,7 @@ Release Notes - + @@ -28,6 +28,29 @@

+ Boost + Release 1.68 +

+
  • + Added member function has_value() for compatibility with std::optional (issue + #52). +
+

+ + Boost + Release 1.67 +

+
    +
  • + Fixed issue + #46. +
    • +
  • + Fixed -Wzero-as-null-pointer-constant warnings. +
    • +
+

+ Boost Release 1.66

@@ -45,7 +68,7 @@

- + Boost Release 1.63

@@ -69,7 +92,7 @@

- + Boost Release 1.62

@@ -77,7 +100,7 @@ Fixed Trac #12179.

- + Boost Release 1.61

@@ -120,7 +143,7 @@

- + Boost Release 1.60

@@ -131,7 +154,7 @@ #11203.

- + Boost Release 1.59

@@ -145,7 +168,7 @@

- + Boost Release 1.58

@@ -181,7 +204,7 @@

- + Boost Release 1.57

@@ -191,7 +214,7 @@ to fix C++03 compile error on logic_error("...")".

- + Boost Release 1.56

diff --git a/doc/html/boost_optional/tutorial/design_overview.html b/doc/html/boost_optional/tutorial/design_overview.html index 5d2a7a0..fe959b6 100644 --- a/doc/html/boost_optional/tutorial/design_overview.html +++ b/doc/html/boost_optional/tutorial/design_overview.html @@ -3,7 +3,7 @@ Design Overview - + diff --git a/doc/html/boost_optional/tutorial/design_overview/the_interface.html b/doc/html/boost_optional/tutorial/design_overview/the_interface.html index 6b860a7..5c7d153 100644 --- a/doc/html/boost_optional/tutorial/design_overview/the_interface.html +++ b/doc/html/boost_optional/tutorial/design_overview/the_interface.html @@ -3,7 +3,7 @@ The Interface - + diff --git a/doc/html/boost_optional/tutorial/design_overview/the_semantics.html b/doc/html/boost_optional/tutorial/design_overview/the_semantics.html index d84118a..cdbd9e6 100644 --- a/doc/html/boost_optional/tutorial/design_overview/the_semantics.html +++ b/doc/html/boost_optional/tutorial/design_overview/the_semantics.html @@ -3,7 +3,7 @@ The semantics - + diff --git a/doc/html/boost_optional/tutorial/exception_safety_guarantees.html b/doc/html/boost_optional/tutorial/exception_safety_guarantees.html index 925eca6..6d57a52 100644 --- a/doc/html/boost_optional/tutorial/exception_safety_guarantees.html +++ b/doc/html/boost_optional/tutorial/exception_safety_guarantees.html @@ -3,7 +3,7 @@ Exception Safety Guarantees - + diff --git a/doc/html/boost_optional/tutorial/gotchas.html b/doc/html/boost_optional/tutorial/gotchas.html index fab4d53..45c9435 100644 --- a/doc/html/boost_optional/tutorial/gotchas.html +++ b/doc/html/boost_optional/tutorial/gotchas.html @@ -3,7 +3,7 @@ Gotchas - + diff --git a/doc/html/boost_optional/tutorial/gotchas/false_positive_with__wmaybe_uninitialized.html b/doc/html/boost_optional/tutorial/gotchas/false_positive_with__wmaybe_uninitialized.html index 299b211..2352db7 100644 --- a/doc/html/boost_optional/tutorial/gotchas/false_positive_with__wmaybe_uninitialized.html +++ b/doc/html/boost_optional/tutorial/gotchas/false_positive_with__wmaybe_uninitialized.html @@ -3,7 +3,7 @@ False positive with -Wmaybe-uninitialized - + diff --git a/doc/html/boost_optional/tutorial/gotchas/mixed_relational_comparisons.html b/doc/html/boost_optional/tutorial/gotchas/mixed_relational_comparisons.html index a0c4eb0..187e457 100644 --- a/doc/html/boost_optional/tutorial/gotchas/mixed_relational_comparisons.html +++ b/doc/html/boost_optional/tutorial/gotchas/mixed_relational_comparisons.html @@ -3,7 +3,7 @@ Mixed relational comparisons - + diff --git a/doc/html/boost_optional/tutorial/gotchas/moved_from__optional_.html b/doc/html/boost_optional/tutorial/gotchas/moved_from__optional_.html index 2be1f77..0e1b772 100644 --- a/doc/html/boost_optional/tutorial/gotchas/moved_from__optional_.html +++ b/doc/html/boost_optional/tutorial/gotchas/moved_from__optional_.html @@ -3,7 +3,7 @@ Moved-from optional - + diff --git a/doc/html/boost_optional/tutorial/in_place_factories.html b/doc/html/boost_optional/tutorial/in_place_factories.html index 1f4e145..f00e5ed 100644 --- a/doc/html/boost_optional/tutorial/in_place_factories.html +++ b/doc/html/boost_optional/tutorial/in_place_factories.html @@ -3,7 +3,7 @@ In-Place Factories - + diff --git a/doc/html/boost_optional/tutorial/io_operators.html b/doc/html/boost_optional/tutorial/io_operators.html index 874f5ac..bbfc1f7 100644 --- a/doc/html/boost_optional/tutorial/io_operators.html +++ b/doc/html/boost_optional/tutorial/io_operators.html @@ -3,7 +3,7 @@ IO operators - + diff --git a/doc/html/boost_optional/tutorial/optional_references.html b/doc/html/boost_optional/tutorial/optional_references.html index 702733c..417ff36 100644 --- a/doc/html/boost_optional/tutorial/optional_references.html +++ b/doc/html/boost_optional/tutorial/optional_references.html @@ -3,7 +3,7 @@ Optional references - + diff --git a/doc/html/boost_optional/tutorial/optional_references/rebinding_semantics_for_assignment_of_optional_references.html b/doc/html/boost_optional/tutorial/optional_references/rebinding_semantics_for_assignment_of_optional_references.html index 219fd61..f12fb59 100644 --- a/doc/html/boost_optional/tutorial/optional_references/rebinding_semantics_for_assignment_of_optional_references.html +++ b/doc/html/boost_optional/tutorial/optional_references/rebinding_semantics_for_assignment_of_optional_references.html @@ -3,7 +3,7 @@ Rebinding semantics for assignment of optional references - + diff --git a/doc/html/boost_optional/tutorial/performance_considerations.html b/doc/html/boost_optional/tutorial/performance_considerations.html index f54e49e..6a6667d 100644 --- a/doc/html/boost_optional/tutorial/performance_considerations.html +++ b/doc/html/boost_optional/tutorial/performance_considerations.html @@ -3,7 +3,7 @@ Performance considerations - + @@ -56,12 +56,13 @@

We call it a direct storage. This makes optional<T> a trivially-copyable type for scalar Ts. - This only works for compilers that support defaulted functions. On compilers - without defaulted functions we still use the direct storage, but optional<T> is - no longer recognized as trivially-copyable. Apart from scalar types, we leave - the programmer a way of customizing her type, so that it is reconized by - optional as candidate for - optimized storage, by specializing type trait boost::opitonal_config::optional_uses_direct_storage_for: + This only works for compilers that support defaulted functions (including + defaulted move assignment and constructor). On compilers without defaulted + functions we still use the direct storage, but optional<T> + is no longer recognized as trivially-copyable. Apart from scalar types, we + leave the programmer a way of customizing her type, so that it is reconized + by optional as candidate + for optimized storage, by specializing type trait boost::opitonal_config::optional_uses_direct_storage_for: 

struct X // not trivial
 {
diff --git a/doc/html/boost_optional/tutorial/relational_operators.html b/doc/html/boost_optional/tutorial/relational_operators.html
index 744120d..8aa9234 100644
--- a/doc/html/boost_optional/tutorial/relational_operators.html
+++ b/doc/html/boost_optional/tutorial/relational_operators.html
@@ -3,7 +3,7 @@
 
 Relational operators
 
-
+
 
 
 
diff --git a/doc/html/boost_optional/tutorial/type_requirements.html b/doc/html/boost_optional/tutorial/type_requirements.html
index 8a9eb7f..191f5fe 100644
--- a/doc/html/boost_optional/tutorial/type_requirements.html
+++ b/doc/html/boost_optional/tutorial/type_requirements.html
@@ -3,7 +3,7 @@
 
 Type requirements
 
-
+
 
 
 
diff --git a/doc/html/boost_optional/tutorial/when_to_use_optional.html b/doc/html/boost_optional/tutorial/when_to_use_optional.html
index 675bd3f..b56a8c0 100644
--- a/doc/html/boost_optional/tutorial/when_to_use_optional.html
+++ b/doc/html/boost_optional/tutorial/when_to_use_optional.html
@@ -3,7 +3,7 @@
 
 When to use Optional
 
-
+
 
 
 
diff --git a/doc/html/index.html b/doc/html/index.html
index 1429a21..b9ec32a 100644
--- a/doc/html/index.html
+++ b/doc/html/index.html
@@ -3,7 +3,7 @@
 
 Boost.Optional
 
-
+
 
 
 
@@ -146,7 +146,7 @@
 
 
 
-
+
Last revised: May 17, 2017 at 23:01:39 GMT
Last revised: March 23, 2018 at 23:01:17 GMT

 

 

 

diff --git a/doc/html/optional/reference.html b/doc/html/optional/reference.html
index fe13339..da63269 100644
--- a/doc/html/optional/reference.html
+++ b/doc/html/optional/reference.html
@@ -3,7 +3,7 @@
 
 Reference
 
-
+
 
 
 
diff --git a/doc/html/optional/reference/header__boost_optional_optional_hpp_.html b/doc/html/optional/reference/header__boost_optional_optional_hpp_.html
index 24626e3..fdfb029 100644
--- a/doc/html/optional/reference/header__boost_optional_optional_hpp_.html
+++ b/doc/html/optional/reference/header__boost_optional_optional_hpp_.html
@@ -3,7 +3,7 @@
 
 Header <boost/optional/optional.hpp>
 
-
+
 
 
 
diff --git a/doc/html/optional/tutorial.html b/doc/html/optional/tutorial.html
index b3260b9..6d1122b 100644
--- a/doc/html/optional/tutorial.html
+++ b/doc/html/optional/tutorial.html
@@ -3,7 +3,7 @@
 
 Tutorial
 
-
+
 
 
 
diff --git a/include/boost/optional/detail/optional_reference_spec.hpp b/include/boost/optional/detail/optional_reference_spec.hpp
index 012e91a..8e9974c 100644
--- a/include/boost/optional/detail/optional_reference_spec.hpp
+++ b/include/boost/optional/detail/optional_reference_spec.hpp
@@ -159,6 +159,7 @@ public:
     void reset() BOOST_NOEXCEPT { ptr_ = 0; }
 
     bool is_initialized() const BOOST_NOEXCEPT { return ptr_ != 0; }
+    bool has_value() const BOOST_NOEXCEPT { return ptr_ != 0; }
     
 #ifndef BOOST_OPTIONAL_DETAIL_NO_RVALUE_REFERENCES   
  
diff --git a/include/boost/optional/optional.hpp b/include/boost/optional/optional.hpp
index 74ef49c..17c8f89 100644
--- a/include/boost/optional/optional.hpp
+++ b/include/boost/optional/optional.hpp
@@ -375,7 +375,7 @@ class optional_base : public optional_tag
     pointer_const_type get_ptr() const { return m_initialized ? get_ptr_impl() : 0 ; }
     pointer_type       get_ptr()       { return m_initialized ? get_ptr_impl() : 0 ; }
 
-    bool is_initialized() const { return m_initialized ; }
+    bool is_initialized() const BOOST_NOEXCEPT { return m_initialized ; }
 
   protected :
 
@@ -1333,6 +1333,8 @@ class optional
       }
 #endif
       
+    bool has_value() const BOOST_NOEXCEPT { return this->is_initialized() ; }
+    
     bool operator!() const BOOST_NOEXCEPT { return !this->is_initialized() ; }
     
     BOOST_EXPLICIT_OPERATOR_BOOL_NOEXCEPT()
diff --git a/test/optional_test.cpp b/test/optional_test.cpp
index 017d4ff..3354430 100644
--- a/test/optional_test.cpp
+++ b/test/optional_test.cpp
@@ -32,7 +32,7 @@
 
 #include "boost/core/lightweight_test.hpp"
 
-#include "optional_test_common.cpp"
+#include "optional_test_common.hpp"
 
 void test_implicit_construction ( optional opt, double v, double z )
 {
diff --git a/test/optional_test_common.cpp b/test/optional_test_common.hpp
similarity index 94%
rename from test/optional_test_common.cpp
rename to test/optional_test_common.hpp
index acb935c..943e646 100644
--- a/test/optional_test_common.cpp
+++ b/test/optional_test_common.hpp
@@ -194,6 +194,9 @@ inline void check_uninitialized_const ( optional const& opt )
   BOOST_TEST( !opt ) ;
   BOOST_TEST( !get_pointer(opt) ) ;
   BOOST_TEST( !opt.get_ptr() ) ;
+  BOOST_TEST( !opt.has_value() ) ;
+  BOOST_TEST( !opt.is_initialized() ) ;
+  BOOST_TEST( opt == boost::none ) ;
 }
 template
 inline void check_uninitialized ( optional& opt )
@@ -204,6 +207,9 @@ inline void check_uninitialized ( optional& opt )
   BOOST_TEST( !opt ) ;
   BOOST_TEST( !get_pointer(opt) ) ;
   BOOST_TEST( !opt.get_ptr() ) ;
+  BOOST_TEST( !opt.has_value() ) ;
+  BOOST_TEST( !opt.is_initialized() ) ;
+  BOOST_TEST( opt == boost::none ) ;
 
   check_uninitialized_const(opt);
 }
@@ -220,6 +226,9 @@ inline void check_initialized_const ( optional const& opt )
   BOOST_TEST ( !!opt ) ;
   BOOST_TEST ( get_pointer(opt) ) ;
   BOOST_TEST ( opt.get_ptr() ) ;
+  BOOST_TEST ( opt.has_value() ) ;
+  BOOST_TEST ( opt.is_initialized() ) ;
+  BOOST_TEST ( opt != boost::none ) ;
 }
 
 template
@@ -234,6 +243,9 @@ inline void check_initialized ( optional& opt )
   BOOST_TEST ( !!opt ) ;
   BOOST_TEST ( get_pointer(opt) ) ;
   BOOST_TEST ( opt.get_ptr() ) ;
+  BOOST_TEST ( opt.has_value() ) ;
+  BOOST_TEST ( opt.is_initialized() ) ;
+  BOOST_TEST ( opt != boost::none ) ;
 
   check_initialized_const(opt);
 }