| |
|
|
| year_month
|
|
|
| constexpr auto operator/( const std::chrono::year& y, const std::chrono::month& m ) noexcept -> std::chrono::year_month;
|
(1) |
(since C++20) |
| constexpr auto operator/( const std::chrono::year& y, int m ) noexcept -> std::chrono::year_month;
|
(2) |
(since C++20) |
| month_day
|
|
|
| constexpr auto operator/( const std::chrono::month& m, const std::chrono::day& d ) noexcept -> std::chrono::month_day;
|
(3) |
(since C++20) |
| constexpr auto operator/( const std::chrono::month& m, int d ) noexcept -> std::chrono::month_day;
|
(4) |
(since C++20) |
| constexpr auto operator/( int m, const std::chrono::day& d ) noexcept -> std::chrono::month_day;
|
(5) |
(since C++20) |
| constexpr auto operator/( const std::chrono::day& d, const std::chrono::month& m ) noexcept -> std::chrono::month_day;
|
(6) |
(since C++20) |
| constexpr auto operator/( const std::chrono::day& d, int m ) noexcept -> std::chrono::month_day;
|
(7) |
(since C++20) |
| month_day_last
|
|
|
| constexpr auto operator/( const std::chrono::month& m, std::chrono::last_spec ) noexcept -> std::chrono::month_day_last;
|
(8) |
(since C++20) |
| constexpr auto operator/( int m, std::chrono::last_spec ) noexcept -> std::chrono::month_day_last;
|
(9) |
(since C++20) |
| constexpr auto operator/( std::chrono::last_spec, const std::chrono::month& m ) noexcept -> std::chrono::month_day_last;
|
(10) |
(since C++20) |
| constexpr auto operator/( std::chrono::last_spec, int m ) noexcept -> std::chrono::month_day_last;
|
(11) |
(since C++20) |
| month_weekday
|
|
|
| constexpr auto operator/( const std::chrono::month& m, const std::chrono::weekday_indexed& wdi ) noexcept -> std::chrono::month_weekday;
|
(12) |
(since C++20) |
| constexpr auto operator/( int m, const std::chrono::weekday_indexed& wdi ) noexcept -> std::chrono::month_weekday;
|
(13) |
(since C++20) |
| constexpr auto operator/( const std::chrono::weekday_indexed& wdi, const std::chrono::month& m ) noexcept -> std::chrono::month_weekday;
|
(14) |
(since C++20) |
| constexpr auto operator/( const std::chrono::weekday_indexed& wdi, int m ) noexcept -> std::chrono::month_weekday;
|
(15) |
(since C++20) |
| month_weekday_last
|
|
|
| constexpr auto operator/( const std::chrono::month& m, const std::chrono::weekday_last& wdl ) noexcept -> std::chrono::month_weekday_last;
|
(16) |
(since C++20) |
| constexpr auto operator/( int m, const std::chrono::weekday_last& wdl ) noexcept -> std::chrono::month_weekday_last;
|
(17) |
(since C++20) |
| constexpr auto operator/( const std::chrono::weekday_last& wdl, const std::chrono::month& m ) noexcept -> std::chrono::month_weekday_last;
|
(18) |
(since C++20) |
| constexpr auto operator/( const std::chrono::weekday_last& wdl, int m ) noexcept -> std::chrono::month_weekday_last;
|
(19) |
(since C++20) |
| year_month_day
|
|
|
| constexpr auto operator/( const std::chrono::year_month& ym, const std::chrono::day& d ) noexcept -> std::chrono::year_month_day;
|
(20) |
(since C++20) |
| constexpr auto operator/( const std::chrono::year_month& ym, int d ) noexcept -> std::chrono::year_month_day;
|
(21) |
(since C++20) |
| constexpr auto operator/( const std::chrono::year& y, const std::chrono::month_day& md ) noexcept -> std::chrono::year_month_day;
|
(22) |
(since C++20) |
| constexpr auto operator/( int y, const std::chrono::month_day& md ) noexcept -> std::chrono::year_month_day;
|
(23) |
(since C++20) |
| constexpr auto operator/( const std::chrono::month_day& md, const std::chrono::year& y ) noexcept -> std::chrono::year_month_day;
|
(24) |
(since C++20) |
| constexpr auto operator/( const std::chrono::month_day& md, int y ) noexcept -> std::chrono::year_month_day;
|
(25) |
(since C++20) |
| year_month_day_last
|
|
|
| constexpr auto operator/( const std::chrono::year_month& ym, std::chrono::last_spec ) noexcept -> std::chrono::year_month_day_last;
|
(26) |
(since C++20) |
| constexpr auto operator/( const std::chrono::year& y, const std::chrono::month_day_last& mdl ) noexcept -> std::chrono::year_month_day_last;
|
(27) |
(since C++20) |
| constexpr auto operator/( int y, const std::chrono::month_day_last& mdl ) noexcept -> std::chrono::year_month_day_last;
|
(28) |
(since C++20) |
| constexpr auto operator/( const std::chrono::month_day_last& mdl, const std::chrono::year& y ) noexcept -> std::chrono::year_month_day_last;
|
(29) |
(since C++20) |
| constexpr auto operator/( const std::chrono::month_day_last& mdl, int y ) noexcept -> std::chrono::year_month_day_last;
|
(30) |
(since C++20) |
| year_month_weekday
|
|
|
| constexpr auto operator/( const std::chrono::year_month& ym, const std::chrono::weekday_indexed& wdi ) noexcept -> std::chrono::year_month_weekday;
|
(31) |
(since C++20) |
| constexpr auto operator/( const std::chrono::year& y, const std::chrono::month_weekday& mwd ) noexcept -> std::chrono::year_month_weekday;
|
(32) |
(since C++20) |
| constexpr auto operator/( int y, const std::chrono::month_weekday& mwd ) noexcept -> std::chrono::year_month_weekday;
|
(33) |
(since C++20) |
| constexpr auto operator/( const std::chrono::month_weekday& mwd, const std::chrono::year& y ) noexcept -> std::chrono::year_month_weekday;
|
(34) |
(since C++20) |
| constexpr auto operator/( const std::chrono::month_weekday& mwd, int y ) noexcept -> std::chrono::year_month_weekday;
|
(35) |
(since C++20) |
| year_month_weekday_last
|
|
|
| constexpr auto operator/( const std::chrono::year_month& ym, const std::chrono::weekday_last& wdl ) noexcept -> std::chrono::year_month_weekday_last;
|
(36) |
(since C++20) |
| constexpr auto operator/( const std::chrono::year& y, const std::chrono::month_weekday_last& mwdl ) noexcept -> std::chrono::year_month_weekday_last;
|
(37) |
(since C++20) |
| constexpr auto operator/( int y, const std::chrono::month_weekday_last& mwdl ) noexcept -> std::chrono::year_month_weekday_last;
|
(38) |
(since C++20) |
| constexpr auto operator/( const std::chrono::month_weekday_last& mwdl, const std::chrono::year& y ) noexcept -> std::chrono::year_month_weekday_last;
|
(39) |
(since C++20) |
| constexpr auto operator/( const std::chrono::month_weekday_last& mwdl, int y ) noexcept -> std::chrono::year_month_weekday_last;
|
(40) |
(since C++20) |
| | |
These operator/ overloads provide a conventional syntax for the creation of Proleptic 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 case day can replaced with one of:
- std::chrono::last, for the last day of the month;
weekday[i], for the ith weekday of the month;weekday[std::chrono::last], for the last weekday of the month.
A plain integer is accepted if its meaning is unambiguous from the types of other operands: 2005y/4/5 is allowed, but 5/April/2005 is not.
Partial-date types (year_month, month_day, etc.) can be created by not applying the second operator/ in any of the three orders.
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())
Example
#include <chrono>
using namespace std::chrono;
constexpr auto ym{2021y/8};
static_assert(ym == year_month(year(2021), August));
constexpr auto md{9/15d};
static_assert(md == month_day(September, day(15)));
constexpr auto mdl{October/last};
static_assert(mdl == month_day_last(month(10)));
constexpr auto mw{11/Monday[3]};
static_assert(mw == month_weekday(November, Monday[3]));
constexpr auto 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:
constexpr auto 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() {}