std::chrono:: year_month

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year_month
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C-style date and time
std::chrono::year_month
Defined in header <chrono>
class year_month ;
(since C++20)

The class year_month represents a specific month of a specific year, but with an unspecified day. It is a field-based time point, with a resolution of std::chrono::months .

year_month is a TriviallyCopyable StandardLayoutType .

Member functions

constructs a year_month
(public member function)
accesses the stored year and month
(public member function)
modifies the year_month by some number of months or years
(public member function)
checks if this year_month is valid
(public member function)

Nonmember functions

(C++20)
compares two year_month values
(function)
(C++20)
performs arithmetic on year_month
(function)
(C++20)
outputs a year_month into a stream
(function template)
(C++20)
parses a year_month from a stream according to the provided format
(function template)

Helper classes

(C++20)
formatting support for year_month
(class template specialization)
(C++26)
hash support for std::chrono::year_month
(class template specialization)
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