std:: hash <std::chrono::zoned_time>

From cppreference.com
Utilities library
General utilities
Relational operators (deprecated in C++20)
Defined in header <chrono>
template < class Duration, class TimeZonePtr >
struct hash < std:: chrono :: zoned_time < Duration, TimeZonePtr >> ;
(since C++26)

The template specialization of std::hash for std::chrono::zoned_time allows users to obtain hashes of objects of type std:: chrono :: zoned_time < Duration, TimeZonePtr > . This specialization is enabled if and only if both std:: hash < Duration > and std:: hash < TimeZonePtr > are enabled.

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)