std::chrono::month_weekday::ok

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

#include <cassert>
#include <chrono>
 
int main()
{
    auto mwdi{std::chrono::March/std::chrono::Friday[1]};
    assert(mwdi.ok());
 
    mwdi = {std::chrono::month(17)/std::chrono::Friday[1]}; 
    assert(not mwdi.ok());
 
    mwdi = {std::chrono::March/std::chrono::Friday[-4]}; 
    assert(not mwdi.ok());
}

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