21 Strings library [strings]

21.4 String view classes [string.view]

21.4.6 Hash support [string.view.hash]

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template<> struct hash<string_view>; template<> struct hash<u8string_view>; template<> struct hash<u16string_view>; template<> struct hash<u32string_view>; template<> struct hash<wstring_view>;
1
#
The specialization is enabled ([unord.hash]).
[ Note
:
The hash value of a string view object is equal to the hash value of the corresponding string object ([basic.string.hash]).
— end note
 ]