diff options
Diffstat (limited to 'libs/move/doc/move.qbk')
| -rw-r--r-- | libs/move/doc/move.qbk | 33 |
1 files changed, 25 insertions, 8 deletions
diff --git a/libs/move/doc/move.qbk b/libs/move/doc/move.qbk index dbd7d11a8..729e92a43 100644 --- a/libs/move/doc/move.qbk +++ b/libs/move/doc/move.qbk @@ -532,19 +532,26 @@ care to achieve portable and efficient code when using the library with C++03 co [section:emulation_limitations_base Initializing base classes] When initializing base classes in move constructors, users must -cast the reference to a base class reference before moving it. Example: +cast the reference to a base class reference before moving it or just +use `BOOST_MOVE_BASE`. Example: [c++] - //Portable and efficient Derived(BOOST_RV_REF(Derived) x) // Move ctor - : Base(boost::move(static_cast<Base&>(x))), - mem_(boost::move(x.mem_)) { } + : Base(boost::move(static_cast<Base&>(x))) + //... +or + +[c++] + + Derived(BOOST_RV_REF(Derived) x) // Move ctor + : Base(BOOST_MOVE_BASE(Base, x)) + //... If casting is not performed the emulation will not move construct -the base class, because no conversion is available from `BOOST_RV_REF(Derived)` -to `BOOST_RV_REF(Base)`. Without the cast we might obtain a compilation +the base class, because no conversion is available from `BOOST_RV_REF(Derived)` to +`BOOST_RV_REF(Base)`. Without the cast or `BOOST_MOVE_BASE` we might obtain a compilation error (for non-copyable types) or a less-efficient move constructor (for copyable types): [c++] @@ -552,8 +559,8 @@ error (for non-copyable types) or a less-efficient move constructor (for copyabl //If Derived is copyable, then Base is copy-constructed. //If not, a compilation error is issued Derived(BOOST_RV_REF(Derived) x) // Move ctor - : Base(boost::move(x)), - mem_(boost::move(x.mem_)) { } + : Base(boost::move(x)) + //... [endsect] @@ -755,6 +762,16 @@ Many thanks to all boosters that have tested, reviewed and improved the library. [section:release_notes Release Notes] +[section:release_notes_boost_1_58_00 Boost 1.58 Release] + +* Added [macroref BOOST_MOVE_BASE BOOST_MOVE_BASE] utility. +* Added [funcref boost::adl_move_swap adl_move_swap] utility. +* Reduced dependencies on other Boost libraries to make the library a bit more lightweight. +* Fixed bugs: + * [@https://svn.boost.org/trac/boost/ticket/11044 Trac #11044: ['"boost::rv inherits off union, when such passed as template argument"]]. + +[endsect] + [section:release_notes_boost_1_57_00 Boost 1.57 Release] * Added `unique_ptr` smart pointer. Thanks to Howard Hinnant for his excellent unique_ptr emulation code and testsuite. |