constexpr bool ok() const noexcept; | (since C++20) |
Checks if the weekday object and the index stored in *this
are both valid.
true
if weekday().ok() == true
and index()
is in the range [1, 5]. Otherwise false
.
#include <iostream> #include <chrono> int main() { std::cout << std::boolalpha; std::chrono::weekday_indexed wdi {std::chrono::Tuesday[2]}; std::cout << (wdi.ok()) << ' '; wdi = {std::chrono::weekday(42)[2]}; std::cout << (wdi.ok()) << ' '; wdi = {std::chrono::Tuesday[-4]}; std::cout << (wdi.ok()) << '\n'; }
Output:
true false false
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