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std::chrono::day::ok(3) C++ Standard Libary std::chrono::day::ok(3) NAME std::chrono::day::ok - std::chrono::day::ok Synopsis constexpr bool ok() const noexcept; (since C++20) Checks if the day value stored in *this is in the valid range, i.e., [1, 31]. Return value true if the day value stored in *this is in the range [1, 31]. Oth- erwise false. Example // Run this code #include <iostream> #include <chrono> int main() { std::chrono::day d1{15}; std::cout << static_cast<unsigned>(d1); if (d1.ok()) { std::cout << " is a valid day.\n"; } else { std::cout << " is an invalid day!\n"; } std::chrono::day d2{35}; std::cout << static_cast<unsigned>(d2) << (d2.ok() ? " is a valid day.\n" : " is an invalid day!\n"); } Output: 15 is a valid day. 35 is an invalid day! See also operator unsigned retrieves the stored day value (public member function) http://cppreference.com 2022.07.31 std::chrono::day::ok(3)
NAME | Synopsis | Return value | Example | Output: | See also
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