std::hash(std::string_view,std::wstring_view,std::u16string_view,std::u32string_view) (3) - Linux Manuals

std::hash(std::string_view,std::wstring_view,std::u16string_view,std::u32string_view): std::hash(std::string_view,std::wstring_view,std::u16string_view,std::u32string_view)

NAME

std::hash(std::string_view,std::wstring_view,std::u16string_view,std::u32string_view) - std::hash(std::string_view,std::wstring_view,std::u16string_view,std::u32string_view)

Synopsis

Defined in header <string_view>
template<> struct hash<std::string_view>; (since C++17)
template<> struct hash<std::wstring_view>; (since C++17)
template<> struct hash<std::u8string_view>; (since C++20)
template<> struct hash<std::u16string_view>; (since C++17)
template<> struct hash<std::u32string_view>; (since C++17)

Template specializations of std::hash for the various view classes for hashing views.
These hashes equal the hashes of corresponding std::basic_string classes: If S is one of the standard basic_string types, SV is the corresponding string view type, and s is an object of type S, then std::hash<S>()(s) == std::hash<SV>()(SV(s)).