Trait class that identifies whether T is a move constructible type.
A move constructible type is a type that can be constructed from an rvalue reference of its type. This includes scalar types and move constructible classes.
A move constructible class is a class that has a move constructor (either its implicit constructor or a custom defined one).
The is_move_constructible class inherits from integral_constant as being either true_type or false_type, depending on whether T is move constructible.
Template parameters
T
A complete type, or void (possible cv-qualified), or an array of unknown bound.