std::chrono::month_day_last::ok

< cpp‎ | chrono‎ | month day last

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

Checks if the month object stored in *this is valid.

Return value

month().ok()

Example

#include <iostream>
#include <chrono>
 
int main()
{
    std::cout << std::boolalpha;
 
    auto mdl {std::chrono::February/std::chrono::last};
    std::cout << (mdl.ok()) << ' ';
    mdl = {std::chrono::month(42)/std::chrono::last};
    std::cout << (mdl.ok()) << '\n';
}

Output:

true false