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concepts: add constructible_from

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This commit is contained in:
Danny Robson 2020-02-24 14:36:40 +11:00
parent 6a15651694
commit df924f049b
1 changed files with 6 additions and 4 deletions
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10
concepts.hpp
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@ -34,9 +34,14 @@ namespace cruft::concepts {
template <typename T>
concept unsigned_integral = integral<T> && std::is_unsigned_v<T>;
template <typename T>
concept destructible = std::is_nothrow_destructible_v<T>;
template <class T, typename ...ArgsT>
concept constructible_from = destructible<T> && std::is_constructible_v<T, ArgsT...>;
template <class T>
concept default_constructible = std::is_default_constructible_v<T>;
concept default_constructible = constructible_from<T>;
template <class T>
concept copy_constructible = std::is_copy_constructible_v<T>;
@ -44,9 +49,6 @@ namespace cruft::concepts {
template <class T>
concept move_constructible = std::is_move_constructible_v<T>;
template <typename T>
concept destructible = std::is_nothrow_destructible_v<T>;
template <typename A, typename B>
concept same_as = std::is_same_v<A, B> and std::is_same_v<B, A>;