John Maddock-3 wrote:
The proposed Boost.Conversion provides some interesting traits (included in C++11) that you could be interested in. is_constructible, is_default_constructible, is_copy_constructible, is_move_constructible as well as is_assignable, is_copy_assignable and is_move_assignable.
If John is interested in we can work together to include them in TypeTraits.
For sure, care to provide a submission/patch?
Thanks, John.
If these (IMO very useful) traits are added, I'd suggest to have macros #defined when the traits can actually do the job-- same as BOOST_HAS_TRIVIAL_COPY, etc. For example, I'd use it this way: template< typename T > struct has_oldof : #if defined(BOOST_HAS_COPY_CONSTRUCTOR) boost::has_copy_constructor<T> // from Boost.Conversion's is_copy_constructible #else boost::mpl::true_ // user specializes has_oldof when can't copy T :( #endif {}; Thanks, --Lorenzo -- View this message in context: http://boost.2283326.n4.nabble.com/type-traits-copy-constructor-tp3854192p38... Sent from the Boost - Dev mailing list archive at Nabble.com.