doc/is_nothrow_move_constructible.qbk

[/ 
  Copyright 2007 John Maddock.
  Copyright 2013 Antony Polukhin.
  Distributed under the Boost Software License, Version 1.0.
  (See accompanying file LICENSE_1_0.txt or copy at
  http://www.boost.org/LICENSE_1_0.txt).
]

[section:is_nothrow_move_constructible is_nothrow_move_constructible]

   template <class T>
   struct is_nothrow_move_constructible : public __tof {};
    
__inherit If T is a (possibly cv-qualified) type with a non-throwing move-constructor
or a type without move-constructor but with non-throwing copy-constructor,
then inherits from __true_type, otherwise inherits from __false_type.  Type `T`
must be a complete type.

In other words, inherits from __true_type only if expression `T(std::move(variable1))`
won't throw (`variable1` is a variable of type `T`).

__compat Without some (C++11 noexcept shall work correctly) help from the compiler, 
`is_nothrow_move_constructible` will never report that a class or struct has a 
non-throwing copy-constructor; this is always safe, if possibly sub-optimal.
Currently (February 2013) MSVC-12.0, Clang and GCC 4.7 have the necessary compiler support to ensure that this
trait "just works".

__header ` #include <boost/type_traits/is_nothrow_move_constructible.hpp>` or ` #include <boost/type_traits.hpp>`

[endsect]