std::chrono::year_month::year_month(3)

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

Synopsis
   year_month() = default; (1) (since C++20)
   constexpr year_month( const std::chrono::year& y, (2) (since C++20)
                        const std::chrono::month& m ) noexcept;
   Constructs a year_month object.
   1) Default constructor leaves the year and month uninitialized.
   2) Constructs a year_month object storing the year y and the month m.

Notes
   A more convenient way to construct a year_month is with operator/, e.g.,
   2007y/std::chrono::April.

See also
   operator/ conventional syntax for Gregorian calendar date creation
   (C++20) (function)