Difference between revisions of "cpp/string/basic string view/hash"
From cppreference.com
< cpp | string | basic string view
(these specializations are (since C++17) themselves) |
(char8_t) |
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{{dcl | since=c++17 | | {{dcl | since=c++17 | | ||
template<> struct hash<std::string_view>; | template<> struct hash<std::string_view>; | ||
| + | }} | ||
| + | {{dcl | since=c++17 | | ||
template<> struct hash<std::wstring_view>; | template<> struct hash<std::wstring_view>; | ||
| + | }} | ||
| + | {{dcl | since=c++20 | | ||
| + | template<> struct hash<std::u8string_view>; | ||
| + | }} | ||
| + | {{dcl | since=c++17 | | ||
template<> struct hash<std::u16string_view>; | template<> struct hash<std::u16string_view>; | ||
| + | }} | ||
| + | {{dcl | since=c++17 | | ||
template<> struct hash<std::u32string_view>; | template<> struct hash<std::u32string_view>; | ||
}} | }} | ||
Revision as of 08:50, 12 November 2018
| Defined in header <string_view>
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| 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)).
See also
| (C++11) |
hash function object (class template) |
