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std::chrono::weekday::ok(3) C++ Standard Libary std::chrono::weekday::ok(3) NAME std::chrono::weekday::ok - std::chrono::weekday::ok Synopsis constexpr bool ok() const noexcept; (since C++20) Checks if the weekday value stored in *this is in the valid range, i.e., [0, 6]. Return value true if the weekday value stored in *this is in the range [0, 6]. Otherwise false. Example // Run this code #include <iostream> #include <chrono> int main() { for (const unsigned u : {0, 1, 6, 7, 8, 9}) { const std::chrono::weekday wd{u}; std::cout << "u = " << u << ", wd = " << wd.c_encoding() // Monday is 1 << (wd.ok() ? " is a valid weekday.\n" : " is an invalid weekday!\n"); } } Output: u = 0, wd = 0 is a valid weekday. u = 1, wd = 1 is a valid weekday. u = 6, wd = 6 is a valid weekday. u = 7, wd = 0 is a valid weekday. u = 8, wd = 8 is an invalid weekday! u = 9, wd = 9 is an invalid weekday! See also c_encoding retrieves the stored weekday value iso_encoding retrieves ISO 8601 weekday value (public member function) http://cppreference.com 2022.07.31 std::chrono::weekday::ok(3)
NAME | Synopsis | Return value | Example | Output: | See also
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