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std::chrono::weekday_last::ok

constexpr bool ok() const noexcept;

(since C++20)

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

Return value

weekday().ok().

Example

#include <iostream>
#include <chrono>
 
int main()
{
    std::cout << std::boolalpha;
 
    auto wdl {std::chrono::Tuesday[std::chrono::last]};
    std::cout << (wdl.ok()) << ' ';
 
    wdl = {std::chrono::weekday(42)[std::chrono::last]};
    std::cout << (wdl.ok()) << '\n';
}

Output:

true false

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