std::chrono::operator/ (日历)

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const std::chrono::month& m) noexcept

-> std::chrono::year_month;

(1) (C++20 起)

constexpr auto operator/(const std::chrono::year& y, int m) noexcept
-> std::chrono::year_month;

(2) (C++20 起)

month_day

constexpr auto operator/(const std::chrono::month& m,

const std::chrono::day& d) noexcept

-> std::chrono::month_day;

(3) (C++20 起)

constexpr auto operator/(const std::chrono::month& m, int d) noexcept
-> std::chrono::month_day;

(4) (C++20 起)

constexpr auto operator/(int m, const std::chrono::day& d) noexcept
-> std::chrono::month_day;

(5) (C++20 起)

constexpr auto operator/(const std::chrono::day& d,

const std::chrono::month& m) noexcept

-> std::chrono::month_day;

(6) (C++20 起)

constexpr auto operator/(const std::chrono::day& d, int m) noexcept
-> std::chrono::month_day;

(7) (C++20 起)

month_day_last

constexpr auto operator/(const std::chrono::month& m,

std::chrono::last_spec) noexcept

-> std::chrono::month_day_last;

(8) (C++20 起)

constexpr auto operator/(int m, std::chrono::last_spec) noexcept
-> std::chrono::month_day_last;

(9) (C++20 起)

constexpr auto operator/(std::chrono::last_spec,

const std::chrono::month& m) noexcept

-> std::chrono::month_day_last;

(10) (C++20 起)

constexpr auto operator/(std::chrono::last_spec, int m) noexcept
-> std::chrono::month_day_last;

(11) (C++20 起)

month_weekday

constexpr auto operator/(const std::chrono::month& m,

const std::chrono::weekday_indexed& wdi) noexcept

-> std::chrono::month_weekday;

(12) (C++20 起)

constexpr auto operator/(int m, const std::chrono::weekday_indexed& wdi) noexcept
-> std::chrono::month_weekday;

(13) (C++20 起)

constexpr auto operator/(const std::chrono::weekday_indexed& wdi,

const std::chrono::month& m) noexcept

-> std::chrono::month_weekday;

(14) (C++20 起)

constexpr auto operator/(const std::chrono::weekday_indexed& wdi, int m) noexcept
-> std::chrono::month_weekday;

(15) (C++20 起)

month_weekday_last

constexpr auto operator/(const std::chrono::month& m,

const std::chrono::weekday_last& wdl) noexcept

-> std::chrono::month_weekday_last;

(16) (C++20 起)

constexpr auto operator/(int m, const std::chrono::weekday_last& wdl) noexcept
-> std::chrono::month_weekday_last;

(17) (C++20 起)

constexpr auto operator/(const std::chrono::weekday_last& wdl,

const std::chrono::month& m) noexcept

-> std::chrono::month_weekday_last;

(18) (C++20 起)

constexpr auto operator/(const std::chrono::weekday_last& wdl, int m) noexcept
-> std::chrono::month_weekday_last;

(19) (C++20 起)

year_month_day

constexpr auto operator/(const std::chrono::year_month& ym,

const std::chrono::day& d) noexcept

-> std::chrono::year_month_day;

(20) (C++20 起)

constexpr auto operator/(const std::chrono::year_month& ym, int d) noexcept
-> std::chrono::year_month_day;

(21) (C++20 起)

constexpr auto operator/(const std::chrono::year& y,

const std::chrono::month_day& md) noexcept

-> std::chrono::year_month_day;

(22) (C++20 起)

constexpr auto operator/(int y, const std::chrono::month_day& md) noexcept
-> std::chrono::year_month_day;

(23) (C++20 起)

constexpr auto operator/(const std::chrono::month_day& md,

const std::chrono::year& y) noexcept

-> std::chrono::year_month_day;

(24) (C++20 起)

constexpr auto operator/(const std::chrono::month_day& md, int y) noexcept
-> std::chrono::year_month_day;

(25) (C++20 起)

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) (C++20 起)

constexpr auto operator/(const std::chrono::year& y,

const std::chrono::month_day_last& mdl) noexcept

-> std::chrono::year_month_day_last;

(27) (C++20 起)

constexpr auto operator/(int y, const std::chrono::month_day_last& mdl) noexcept
-> std::chrono::year_month_day_last;

(28) (C++20 起)

constexpr auto operator/(const std::chrono::month_day_last& mdl,

const std::chrono::year& y) noexcept

-> std::chrono::year_month_day_last;

(29) (C++20 起)

constexpr auto operator/(const std::chrono::month_day_last& mdl, int y) noexcept
-> std::chrono::year_month_day_last;

(30) (C++20 起)

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) (C++20 起)

constexpr auto operator/(const std::chrono::year& y,

const std::chrono::month_weekday& mwd) noexcept

-> std::chrono::year_month_weekday;

(32) (C++20 起)

constexpr auto operator/(int y, const std::chrono::month_weekday& mwd) noexcept
-> std::chrono::year_month_weekday;

(33) (C++20 起)

constexpr auto operator/(const std::chrono::month_weekday& mwd,

const std::chrono::year& y) noexcept

-> std::chrono::year_month_weekday;

(34) (C++20 起)

constexpr auto operator/(const std::chrono::month_weekday& mwd, int y) noexcept
-> std::chrono::year_month_weekday;

(35) (C++20 起)

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) (C++20 起)

constexpr auto operator/(const std::chrono::year& y,

const std::chrono::month_weekday_last& mwdl) noexcept

-> std::chrono::year_month_weekday_last;

(37) (C++20 起)

constexpr auto operator/(int y, const std::chrono::month_weekday_last& mwdl) noexcept
-> std::chrono::year_month_weekday_last;

(38) (C++20 起)

constexpr auto operator/(const std::chrono::month_weekday_last& mwdl,

const std::chrono::year& y) noexcept

-> std::chrono::year_month_weekday_last;

(39) (C++20 起)

constexpr auto operator/(const std::chrono::month_weekday_last& mwdl, int y) noexcept
-> std::chrono::year_month_weekday_last;

(40) (C++20 起)

这些 operator/ 为创建格里高利历日期提供约定语法。

对于创建完整日期，任何下列三种顺序都可接受：

year/month/day
month/day/year
day/month/year

每种情况中，能以下列之一替换 day ：

std::chrono::last ，对于月的最后一日；
weekday[i] ，对于月的第 i 个 weekday ；
weekday[std::chrono::last] ，对于该月的最后一个 weekday 。

若单纯的整数的含义相对于其他运算数的类型无歧义，则可接受它：允许 2005y/4/5 ，但不允许 5/April/2005 。

能够不以三种顺序之一应用第二个 operator/ 创建部分日期类型（ year_month 、 month_day 等）。

返回值

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())

示例

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