[boost] [type_traits]: is_movable

From: Vaclav Vesely (vaclav.vesely_at_[hidden])
Date: 2006-03-13 09:54:53

This is a duplicate. I sent this to the wrong thread by mistake. I'm sorry.

Hi,

draft of the is_movable trait is attached.

Notes:

- Implicit implementation is based on the has_trivial_copy trait.

- For STL configurations, which defines BOOST_HAS_MOVABLE_STL, 
is_movable.hpp declares STL containers (and their const versions) as 
movable. Partial template specialization is required 
(!defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)).

Open issues:

- I'm not sure with volatiles. has_trivial_copy declares volatile types 
explicitly as not has_trivial_copy. I don't know why but is_movable 
should probably follow this.

- I have tested with MSVC (6, 7.1 and 8) and GCC (3.2.3 - MinGW) 
compilers. MSVC is fine but GCC complains with specializations for STL 
types. It seems to be related to a different macro expansion strategy of 
preprocessor. I'm not able to use BOOST_PP_COMMA macro correctly. I will 
appreciate any help.

Regards,
Vaclav