C++ concepts: MoveInsertable (since C++11)
Specifies that a rvalue of the type can be copied in uninitialized storage.
[edit] Requirements
The type T is MoveInsertable into the Container X if, given
| A | the allocator type defined as X::allocator_type | 
| m | the lvalue of type Aobtained from X::get_allocator() | 
| p | the pointer of type T*prepared by the container | 
| rv | rvalue expression of type T, provided as the argument to push_back(), etc | 
the following expression is well-formed:
std::allocator_traits<A>::construct(m, p, rv);
And after evaluation, the value of *p is equivalent to the value formerly held by rv (rv remains valid, but unspecified)
[edit] Notes
If A is std::allocator<T>, then this will call placement-new, as by ::new((void*)p) T(rv).
If std::allocator<T> or a similar allocator is used, a class does not have to implement a move constructor to satisfy this type requirement: a copy constructor that takes a const T& argument can bind rvalue expressions. If a MoveInsertable class implements a move constructor, it may also implement move semantics to take advantage of the fact that the value of rv after construction is unspecified.
[edit] See Also
| CopyInsertable | 


