std::default_initializable
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template < class T > concept default_initializable = std::constructible_from<T> && requires { T{}; } && /* T t; , */; |
( C++20) | |
default_initializable , T
T. .
template<class T>
concept default_initializable =
std::constructible_from<T> &&
requires { T{}; } &&
requires { ::new T; };
|
(C++20) |
, () |
| , ( ) |