std::chrono::day::ok(3) - FreeBSD Ports 15.1.quarterly Manual Pages

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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]. Otherwise
     false.

Example
     // Run this code

      #include <chrono>
      using namespace std::chrono_literals;

      constexpr std::chrono::day d0{00};
      constexpr std::chrono::day d1{13};
      constexpr std::chrono::day d2{42};

      static_assert
      (
	  d0 == 0d && !d0.ok() &&
	  d1 == 13d && d1.ok() &&
	  d2 == 42d && !d2.ok()
      );

      int main() {}

See also
	operator unsigned retrieves the stored day value
			  (public member function)

http://cppreference.com 	   2024.06.10		 std::chrono::day::ok(3)

NAME | Synopsis | Return value | Example | See also

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