Defined in header <concepts> | ||
|---|---|---|
template< class T > concept MoveConstructible = std::Constructible<T, T> && std::ConvertibleTo<T, T>; | (since C++20) |
The concept MoveConstructible is satisfied if T is a reference type, or if it is an object type where an object of that type can constructed from an rvalue of that type in both direct- and copy-initialization contexts, with the usual semantics.
More precisely, if T is an object type, then MoveConstructible<T> is satisfied only if given.
rv, an rvalue of type T, and u2, a distinct object of type T equal to rv, the following are true:
T u = rv;, u is equal to u2; T(rv) is equal to u2; and 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. |
(C++11)(C++11)(C++11) | checks if a type can be constructed from an rvalue reference (class template) |
© cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
http://en.cppreference.com/w/cpp/concepts/MoveConstructible