std::copyable

 

C++

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Concepts library

Core language concepts same_as (C++20) derived_from (C++20) convertible_to (C++20) common_reference_with (C++20) common_with (C++20) integral (C++20) signed_integral (C++20) unsigned_integral (C++20) floating_point (C++20) swappableswappable_with (C++20)(C++20) destructible (C++20) constructible_from (C++20) default_initializable (C++20)   move_constructible (C++20) copy_constructible (C++20) assignable_from (C++20)

Comparison concepts equality_comparableequality_comparable_with (C++20)(C++20) totally_orderedtotally_ordered_with (C++20)(C++20) Object concepts movable (C++20) copyable (C++20) semiregular (C++20) regular (C++20) Callable concepts invocableregular_invocable (C++20)(C++20) predicate (C++20) relation (C++20) equivalence_relation (C++20) strict_weak_order (C++20)

Exposition-only concepts boolean-testable  (C++20)

 

Defined in header <concepts>
template<class T > concept copyable =     std::copy_constructible<T>&&     std::movable<T>&&     std::assignable_from<T&, T&>&&     std::assignable_from<T&, const T&>&&     std::assignable_from<T&, const T>;		(since C++20)

The concept copyable<T> specifies that T is a movable object type that can also be copied (that is, it supports copy construction and copy assignment).

References

• C++23 standard (ISO/IEC 14882:2024):

• 18.6 Object concepts [concepts.object]

• C++20 standard (ISO/IEC 14882:2020):

• 18.6 Object concepts [concepts.object]

See also

movable (C++20)

specifies that an object of a type can be moved and swapped (concept)