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

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std::chrono::month::ok(3)      C++ Standard Libary     std::chrono::month::ok(3)

NAME
     std::chrono::month::ok - std::chrono::month::ok

Synopsis
	constexpr bool ok() const noexcept;  (since C++20)

	Checks	if  the month value stored in *this is in the valid range, i.e.,
     [1, 12].

Return value
	true if the month value stored in *this is in the range [1, 12].  Other-
     wise false.

Example
     // Run this code

      #include <chrono>
      #include <iostream>

      int main()
      {
	  for (const unsigned mm : {6u, 0u, 16U})
	  {
	      std::cout << mm << ": ";
	      const std::chrono::month m{mm};
	      m.ok() ? std::cout << "month is valid\n"
		     : std::cout << "month is invalid\n";
	  }
      }

Output:
      6: month is valid
      0: month is invalid
      16: month is invalid

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

NAME | Synopsis | Return value | Example | Output:

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