std::chrono::operator/(calendar)

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Date and time library

Time point
time_point (C++11)
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Duration
duration (C++11)
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Time of day
is_amis_pm (C++20)(C++20)
make12make24 (C++20)(C++20)
hh_mm_ss (C++20)

Calendar
day (C++20)
month (C++20)
year (C++20)
weekday (C++20)
operator/ (C++20)
year_month_day (C++20)
year_month_day_last (C++20)
year_month_weekday (C++20)
year_month_weekday_last (C++20)
weekday_indexed (C++20)
weekday_last (C++20)
month_day (C++20)
month_day_last (C++20)
month_weekday (C++20)
month_weekday_last (C++20)
year_month (C++20)
last_speclast (C++20)(C++20)
`chrono` I/O
parse (C++20)

Time zone
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leap_second_info (C++20)
get_leap_second_info (C++20)
C-style date and time

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Defined in header`<chrono>`
`year_month`
constexprauto operator/(conststd::chrono::year& y, conststd::chrono::month& m)noexcept ->std::chrono::year_month;	(1)	(since C++20)
constexprauto operator/(conststd::chrono::year& y,int m)noexcept ->std::chrono::year_month;	(2)	(since C++20)
`month_day`
constexprauto operator/(conststd::chrono::month& m, conststd::chrono::day& d)noexcept ->std::chrono::month_day;	(3)	(since C++20)
constexprauto operator/(conststd::chrono::month& m,int d)noexcept ->std::chrono::month_day;	(4)	(since C++20)
constexprauto operator/(int m,conststd::chrono::day& d)noexcept ->std::chrono::month_day;	(5)	(since C++20)
constexprauto operator/(conststd::chrono::day& d, conststd::chrono::month& m)noexcept ->std::chrono::month_day;	(6)	(since C++20)
constexprauto operator/(conststd::chrono::day& d,int m)noexcept ->std::chrono::month_day;	(7)	(since C++20)
`month_day_last`
constexprauto operator/(conststd::chrono::month& m, std::chrono::last_spec)noexcept ->std::chrono::month_day_last;	(8)	(since C++20)
constexprauto operator/(int m,std::chrono::last_spec)noexcept ->std::chrono::month_day_last;	(9)	(since C++20)
constexprauto operator/(std::chrono::last_spec, conststd::chrono::month& m)noexcept ->std::chrono::month_day_last;	(10)	(since C++20)
constexprauto operator/(std::chrono::last_spec,int m)noexcept ->std::chrono::month_day_last;	(11)	(since C++20)
`month_weekday`
constexprauto operator/(conststd::chrono::month& m, conststd::chrono::weekday_indexed& wdi)noexcept ->std::chrono::month_weekday;	(12)	(since C++20)
constexprauto operator/(int m,conststd::chrono::weekday_indexed& wdi)noexcept ->std::chrono::month_weekday;	(13)	(since C++20)
constexprauto operator/(conststd::chrono::weekday_indexed& wdi, conststd::chrono::month& m)noexcept ->std::chrono::month_weekday;	(14)	(since C++20)
constexprauto operator/(conststd::chrono::weekday_indexed& wdi,int m)noexcept ->std::chrono::month_weekday;	(15)	(since C++20)
`month_weekday_last`
constexprauto operator/(conststd::chrono::month& m, conststd::chrono::weekday_last& wdl)noexcept ->std::chrono::month_weekday_last;	(16)	(since C++20)
constexprauto operator/(int m,conststd::chrono::weekday_last& wdl)noexcept ->std::chrono::month_weekday_last;	(17)	(since C++20)
constexprauto operator/(conststd::chrono::weekday_last& wdl, conststd::chrono::month& m)noexcept ->std::chrono::month_weekday_last;	(18)	(since C++20)
constexprauto operator/(conststd::chrono::weekday_last& wdl,int m)noexcept ->std::chrono::month_weekday_last;	(19)	(since C++20)
`year_month_day`
constexprauto operator/(conststd::chrono::year_month& ym, conststd::chrono::day& d)noexcept ->std::chrono::year_month_day;	(20)	(since C++20)
constexprauto operator/(conststd::chrono::year_month& ym,int d)noexcept ->std::chrono::year_month_day;	(21)	(since C++20)
constexprauto operator/(conststd::chrono::year& y, conststd::chrono::month_day& md)noexcept ->std::chrono::year_month_day;	(22)	(since C++20)
constexprauto operator/(int y,conststd::chrono::month_day& md)noexcept ->std::chrono::year_month_day;	(23)	(since C++20)
constexprauto operator/(conststd::chrono::month_day& md, conststd::chrono::year& y)noexcept ->std::chrono::year_month_day;	(24)	(since C++20)
constexprauto operator/(conststd::chrono::month_day& md,int y)noexcept ->std::chrono::year_month_day;	(25)	(since C++20)
`year_month_day_last`
constexprauto operator/(conststd::chrono::year_month& ym, std::chrono::last_spec)noexcept ->std::chrono::year_month_day_last;	(26)	(since C++20)
constexprauto operator/(conststd::chrono::year& y, conststd::chrono::month_day_last& mdl)noexcept ->std::chrono::year_month_day_last;	(27)	(since C++20)
constexprauto operator/(int y,conststd::chrono::month_day_last& mdl)noexcept ->std::chrono::year_month_day_last;	(28)	(since C++20)
constexprauto operator/(conststd::chrono::month_day_last& mdl, conststd::chrono::year& y)noexcept ->std::chrono::year_month_day_last;	(29)	(since C++20)
constexprauto operator/(conststd::chrono::month_day_last& mdl,int y)noexcept ->std::chrono::year_month_day_last;	(30)	(since C++20)
`year_month_weekday`
constexprauto operator/(conststd::chrono::year_month& ym, conststd::chrono::weekday_indexed& wdi)noexcept ->std::chrono::year_month_weekday;	(31)	(since C++20)
constexprauto operator/(conststd::chrono::year& y, conststd::chrono::month_weekday& mwd)noexcept ->std::chrono::year_month_weekday;	(32)	(since C++20)
constexprauto operator/(int y,conststd::chrono::month_weekday& mwd)noexcept ->std::chrono::year_month_weekday;	(33)	(since C++20)
constexprauto operator/(conststd::chrono::month_weekday& mwd, conststd::chrono::year& y)noexcept ->std::chrono::year_month_weekday;	(34)	(since C++20)
constexprauto operator/(conststd::chrono::month_weekday& mwd,int y)noexcept ->std::chrono::year_month_weekday;	(35)	(since C++20)
`year_month_weekday_last`
constexprauto operator/(conststd::chrono::year_month& ym, conststd::chrono::weekday_last& wdl)noexcept ->std::chrono::year_month_weekday_last;	(36)	(since C++20)
constexprauto operator/(conststd::chrono::year& y, conststd::chrono::month_weekday_last& mwdl)noexcept ->std::chrono::year_month_weekday_last;	(37)	(since C++20)
constexprauto operator/(int y,conststd::chrono::month_weekday_last& mwdl)noexcept ->std::chrono::year_month_weekday_last;	(38)	(since C++20)
constexprauto operator/(conststd::chrono::month_weekday_last& mwdl, conststd::chrono::year& y)noexcept ->std::chrono::year_month_weekday_last;	(39)	(since C++20)
constexprauto operator/(conststd::chrono::month_weekday_last& mwdl,int y)noexcept ->std::chrono::year_month_weekday_last;	(40)	(since C++20)

Theseoperator/ overloads provide a conventional syntax for the creation ofProleptic Gregorian calendar dates.

For creation of a full date, any of the following three orders are accepted:

year/month/day,
month/day/year,
day/month/year.

In each caseday can replaced with one of:

std::chrono::last, for the last day of the month;
weekday[i], for thei^thweekday of the month;
weekday[std::chrono::last], for the lastweekday of the month.

A plain integer is accepted if its meaning is unambiguous from the types of other operands:2005y/4/5 is allowed, but5/April/2005 is not.

Partial-date types (year_month,month_day, etc.) can be created by not applying the secondoperator/ in any of the three orders.

[edit]Return value

1)std::chrono::year_month(y, m)

2)std::chrono::year_month(y,std::chrono::month(m))

3,6)std::chrono::month_day(m, d)

4)std::chrono::month_day(m,std::chrono::day(d))

5,7)std::chrono::month_day(std::chrono::month(m), d)

8,10)std::chrono::month_day_last(m)

9,11)std::chrono::month_day_last(std::chrono::month(m))

12,14)std::chrono::month_weekday(m, wdi)

13,15)std::chrono::month_weekday(std::chrono::month(m), wdi)

16,18)std::chrono::month_weekday_last(m, wdl)

17,19)std::chrono::month_weekday_last(std::chrono::month(m), wdl)

20)std::chrono::year_month_day(ym.year(), ym.month(), d)

21)std::chrono::year_month_day(ym.year(), ym.month(),std::chrono::day(d))

22,24)std::chrono::year_month_day(y, md.month(), md.day())

23,25)std::chrono::year_month_day(std::chrono::year(y), md.month(), md.day())

26)std::chrono::year_month_day_last(ym.year(),std::chrono::month_day_last(ym.month()))

27,29)std::chrono::year_month_day_last(y, mdl)

28,30)std::chrono::year_month_day_last(std::chrono::year(y), mdl)

31)std::chrono::year_month_weekday(ym.year(), ym.month(), wdi)

32,34)std::chrono::year_month_weekday(y, mwd.month(), mwd.weekday_indexed())

33,35)std::chrono::year_month_weekday(std::chrono::year(y), mwd.month(), mwd.weekday_indexed())

36)std::chrono::year_month_weekday_last(ym.year(), ym.month(), wdl)

37,39)std::chrono::year_month_weekday_last(y, mwdl.month(), mwdl.weekday_last())

38,40)std::chrono::year_month_weekday_last(std::chrono::year(y), mwdl.month(), mwdl.weekday_last())

[edit]Example

Run this code

#include <chrono>usingnamespace std::chrono; constexprauto ym{2021y/8};static_assert(ym== year_month(year(2021), August)); constexprauto md{9/15d};static_assert(md== month_day(September, day(15))); constexprauto mdl{October/last};static_assert(mdl== month_day_last(month(10))); constexprauto mw{11/Monday[3]};static_assert(mw== month_weekday(November, Monday[3])); constexprauto mwdl{December/Sunday[last]};static_assert(mwdl== month_weekday_last(month(12), weekday_last(Sunday))); // Those 3 year/month/day orders that people actually use on this planet and beyond:constexprauto ymd{year(2021)/January/day(23)};static_assert(ymd== month{1}/23/2021);static_assert(ymd== day{23}/1/2021);static_assert(ymd== year_month_day(2021y, month(January), 23d)); int main(){}

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std::chrono::operator/(calendar)

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