std::chrono::weekday_last:: ok

检查存储在 * this 中的工作日对象是否有效。

返回值

weekday ( ) . ok ( )

示例

#include <chrono>
#include <iostream>
int main()
{
    std::cout << std::boolalpha;
    auto wdl{std::chrono::Tuesday[std::chrono::last]};
    std::cout << (wdl.ok()) << ' ';
    wdl = {std::chrono::weekday(42)[std::chrono::last]};
    std::cout << (wdl.ok()) << '\n';
}

true false