std:: move_constructible

Defined in header <concepts>
template < class T > concept move_constructible = std:: constructible_from < T, T > && std:: convertible_to < T, T > ;		(since C++20)

The concept move_constructible is satisfied if T is a reference type, or if it is an object type where an object of that type can be constructed from an rvalue of that type in both direct- and copy-initialization contexts, with the usual semantics.

Semantic requirements

If T is an object type, then move_constructible<T> is modeled only if given

• rv , an rvalue of type T , and
• u2 , a distinct object of type T equal to rv ,

the following are true:

• After the definition T u = rv ; , u is equal to u2 ;
• T(rv) is equal to u2 ; and
• If T is not const-qualified, then rv 's resulting state (after the definition/expression is evaluated in either bullets above) is valid but unspecified; otherwise, it is unchanged.

References

See also

is_move_constructible is_trivially_move_constructible is_nothrow_move_constructible (C++11) (C++11) (C++11)

checks if a type can be constructed from an rvalue reference (class template)