std::chrono::month_weekday::ok

 

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std::chrono::month_weekday

Member functions

month_weekday::month_weekday

month_weekday::monthmonth_weekday::weekday_indexed

month_weekday::ok

Nonmember functions

operator==

operator<<

Helper classes

formatter<std::chrono::month_weekday>

 

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

Checks if the contained month and weekday_indexed objects are valid.

Return value

month().ok() && weekday_indexed().ok()

Example

Run this code

#include <iostream>
#include <chrono>
 
int main()
{
    std::cout << std::boolalpha;
 
    auto mwdi {std::chrono::March/std::chrono::Friday[1]};
    std::cout << (mwdi.ok()) << ' ';
    mwdi = {std::chrono::month(17)/std::chrono::Friday[1]}; 
    std::cout << (mwdi.ok()) << ' ';
    mwdi = {std::chrono::March/std::chrono::Friday[-4]}; 
    std::cout << (mwdi.ok()) << '\n';
}

Output:

true false false