std::hash<std::chrono::duration>

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< cpp‎ | chrono‎ | duration
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hash<std::chrono::duration>
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Defined in header <chrono>
template < class Rep, class Period >
struct hash< std::chrono::duration <Rep, Period>> ;
(since C++26)

The template specialization of std::hash for std::chrono::duration allows users to obtain hashes of objects of type std::chrono::duration <Rep, Period> . This specialization is enabled if and only if both std::hash<Rep> and std::hash<Period>

Notes

Feature-test macro Value Std Feature
__cpp_lib_chrono 202306L (C++26) Hashing support for std::chrono value classes

See also

(C++11)
 hash function object
(class template)
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