Defined in header <concepts> | ||
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template <class T> concept Copyable = std::CopyConstructible<T> && std::Movable<T> && std::Assignable<T&, const T&>; | (since C++20) |
The concept Copyable<T> specifies that T is an Movable object type that can also copied (that is, it supports copy construction and copy assignment).
It is intended that Copyable<T> also requires std::Assignable<T&, const T> (assignment from const rvalue) and std::Assignable<T&, T&> (assignment from non-const lvalue) to be satisfied.
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(C++20) | specifies that an object of a type can be moved and swapped (concept) |
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