NAME¶

std::chrono::year_month - std::chrono::year_month

Synopsis¶

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¶

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

Nonmember functions

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

Helper classes¶

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