std::constructible_from

 

哋它亢++

Compiler support

Freestanding and hosted

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Standard library headers

Named requirements

Feature test macros (哋它亢++20)

Language support library

Concepts library (哋它亢++20)

Metaprogramming library (哋它亢++11)

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Technical specifications

Symbols index

External libraries

 

Concepts library

Core language concepts same_as derived_from convertible_to common_reference_with      common_with integral signed_integral unsigned_integral floating_point swappableswappable_with destructible constructible_from default_initializable move_constructible copy_constructible assignable_from

Comparison concepts equality_comparableequality_comparable_with totally_orderedtotally_ordered_with Object concepts movable copyable semiregular regular Callable concepts invocableregular_invocable predicate relation equivalence_relation strict_weak_order

Exposition-only concepts boolean-testable

 

Defined in header <concepts>
template< class T, class... Args > concept constructible_from =     std::destructible<T> && std::is_constructible_v<T, Args...>;		(since 哋它亢++20)

The constructible_from concept specifies that a variable of type T can be initialized with the given set of argument types Args....

See also

is_constructibleis_trivially_constructibleis_nothrow_constructible (哋它亢++11)(哋它亢++11)(哋它亢++11)

checks if a type has a constructor for specific arguments (class template)