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std::remove_cvref(3) C++ Standard Libary std::remove_cvref(3) NAME std::remove_cvref - std::remove_cvref Synopsis Defined in header <type_traits> template< class T > (since C++20) struct remove_cvref; If the type T is a reference type, provides the member typedef type which is the type referred to by T with its topmost cv-qualifiers removed. Other- wise type is T with its topmost cv-qualifiers removed. If the program adds specializations for std::remove_cvref, the be- havior is undefined. Member types Name Definition type the type referred by T or T itself if it is not a reference, with top-level cv-qualifiers removed Helper types template< class T > (since C++20) using remove_cvref_t = remove_cvref<T>::type; Possible implementation template<class T> struct remove_cvref { using type = std::remove_cv_t<std::remove_reference_t<T>>; }; Notes Feature-test macro Value Std Feature __cpp_lib_remove_cvref 201711L (C++20) std::remove_cvref Example // Run this code #include <type_traits> int main() { static_assert(std::is_same_v<std::remove_cvref_t<int>, int>); static_assert(std::is_same_v<std::remove_cvref_t<int&>, int>); static_assert(std::is_same_v<std::remove_cvref_t<int&&>, int>); static_assert(std::is_same_v<std::remove_cvref_t<const int&>, int>); static_assert(std::is_same_v<std::remove_cvref_t<const int[2]>, int[2]>); static_assert(std::is_same_v<std::remove_cvref_t<const int(&)[2]>, int[2]>); static_assert(std::is_same_v<std::remove_cvref_t<int(int)>, int(int)>); } See also remove_cv remove_const remove_volatile removes const and/or volatile specifiers from the given type (C++11) (class template) (C++11) (C++11) remove_reference removes a reference from the given type (C++11) (class template) decay applies type transformations as when passing a function argument by (C++11) value (class template) http://cppreference.com 2024.06.10 std::remove_cvref(3)
NAME | Synopsis | Member types | Helper types | Possible implementation | Notes | Example | See also
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