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std::Constructible

Defined in header <concepts> 
template < class T, class... Args >
concept Constructible =
  std::Destructible<T> && std::is_constructible_v<T, Args...>;
 (since C++20)

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

See also

(C++11)(C++11)(C++11)
 checks if a type has a constructor for specific arguments
(class template)

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http://en.cppreference.com/w/cpp/concepts/Constructible