std::chrono::year_month_weekday_last::year,std::chrono::year_month_weekday_last::month,std::chrono::year_month_weekday_last::weekday,std::chrono::year_month_weekday_last::weekday_last
来自 cppreference.com
< cpp | chrono | year month weekday last
constexpr std::chrono::year year() const noexcept; |
(1) | (自 C++20 起) |
constexpr std::chrono::month month() const noexcept; |
(2) | (自 C++20 起) |
constexpr std::chrono::weekday weekday() const noexcept; |
(3) | (自 C++20 起) |
constexpr std::chrono::weekday_last weekday_last() const noexcept; |
(4) | (自 C++20 起) |
检索存储在此 year_month_weekday_last
对象中的字段值。
[编辑] 返回值
1) 返回存储的 std::chrono::year 值。
2) 返回存储的 std::chrono::month 值。
3) 返回存储的 std::chrono::weekday 值。
4) std::chrono::weekday_last(weekday())
[编辑] 示例
运行此代码
#include <chrono> #include <iostream> using namespace std::chrono; int main() { auto ymwdl{Tuesday[last]/November/2022}; auto wdl = ymwdl.weekday_last(); wdl = (wdl.weekday() + days(1))[last]; ymwdl = {ymwdl.year() + years(1), ymwdl.month() - months(2), wdl}; std::cout << year_month_day(ymwdl) << '\n'; }
输出
2023-09-27