std::same_as(3) Library Functions Manual std::same_as(3)

std::same_as - [concept.same], concept same_as

#include <concepts>

template<typename _Tp, typename _Up>
concept std::same_as =  __detail::__same_as<_Tp, _Up> && __detail::__same_as<_Up, _Tp>

[concept.same], concept same_as

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