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std::chrono...ay_last::ok(3) C++ Standard Libary std::chrono...ay_last::ok(3) NAME std::chrono::year_month_weekday_last::ok - std::chrono::year_month_weekday_last::ok Synopsis constexpr bool ok() const noexcept; (since C++20) Checks if this object represents a valid date. Since a year_month_weekday_last represents the last weekday of a particular month, it is valid as long as the year, month and weekday are valid. Return value year().ok() && month().ok() && weekday().ok() Example // Run this code #include <iostream> #include <chrono> using namespace std::chrono; int main() { std::cout << std::boolalpha; auto ymwdl {Tuesday[last]/11/2020}; std::cout << (ymwdl.ok()) << ' '; ymwdl = Tuesday[last]/-2/2021; std::cout << (ymwdl.ok()) << ' '; ymwdl += months(0); // Normalize month std::cout << (ymwdl.ok()) << '\n'; } Output: true false true http://cppreference.com 2022.07.31 std::chrono...ay_last::ok(3)
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