std::chrono::weekday_indexed::weekday

 

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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)
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C 样式日期和时间

 

std::chrono::weekday_indexed

成员函数

weekday_indexed::weekday_indexed

weekday_indexed::weekday

weekday_indexed::index

weekday_indexed::ok

非成员函数

operator==

operator<<

辅助类

formatter<std::chrono::weekday_indexed>

hash<std::chrono::weekday_indexed> (C++26)

 

constexpr std::chrono::weekday weekday() const noexcept;		(自 C++20 起)

检索存储在 *this 中的 std::chrono::weekday 对象的副本。

返回值

存储在 *this 中的 std::chrono::weekday 对象的副本。

示例

运行此代码

#include <chrono>
#include <iostream>
 
int main()
{
    std::cout << std::boolalpha;
 
    // 2nd Tuesday of a month
    std::chrono::weekday_indexed wdi{std::chrono::Tuesday[2]};
    std::cout << (std::chrono::year_month_day{wdi/10/2019} == 
                  std::chrono::year_month_day{std::chrono::October/8/2019}) << ' ';
 
    // 2nd Tuesday => 2nd Thursday
    wdi = {wdi.weekday() + std::chrono::days(2), wdi.index()};
    std::cout << (std::chrono::year_month_day{wdi/10/2019} == 
                  std::chrono::year_month_day{std::chrono::October/10/2019}) << '\n';
}

输出

true true

另请参见

index

访问存储的索引 (公有成员函数)