##### cppreference.com

##### Search

Create account

##### Namespaces

- Page
- Discussion

##### Variants

##### Views

- View
- Edit
- History

##### Actions

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

From cppreference.com
< cpp‎ | string‎ | basic string view

Defined in header `<string_view>` |  |
template<> struct hash<std::string_view>; template<> struct hash<std::wstring_view>; template<> struct hash<std::u16string_view>; 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)). | (since C++17)

### [edit] See also

hash (C++11) | hash function object (class template) [edit]

Retrieved from "http://en.cppreference.com/mwiki/index.php?title=cpp/string/basic_string_view/hash&oldid=90091"