year_month_day() = default; | (1) | (since C++20) |
constexpr year_month_day( const std::chrono::year& y,
const std::chrono::month& m,
const std::chrono::day& d ) noexcept;
| (2) | (since C++20) |
constexpr year_month_day( const std::chrono::year_month_day_last& ymdl ) noexcept; | (3) | (since C++20) |
constexpr year_month_day( const std::chrono::sys_days& dp ) noexcept; | (4) | (since C++20) |
explicit constexpr year_month_day( const std::chrono::local_days& dp ) noexcept; | (5) | (since C++20) |
Constructs a year_month_day object.
year_month_day object that stores the year y, month m and day d.year_month_day object that stores the year ymdl.year(), month ymdl.month() and day ymdl.day().year_month_day object that represent the same date as the one represented by dp. year_month_day object that represent the same date as the one represented by dp, as if by year_month_day(sys_days(dp.time_since_epoch())).Constructors (3-4) define implicit conversions from std::chrono::year_month_day_last and std::chrono::sys_days, respectively.
For any year_month_day object ymd representing a valid date (ymd.ok() == true), converting ymd to sys_days and back yields the same value.
A year_month_day can also be created by combining one of the partial-date types std::chrono::year_month and std::chrono::month_day with the missing component (day and year, respectively) using operator/.
|
(C++20) | conventional syntax for Gregorian calendar date creation (function) |
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