std::chrono::year_month::ok
constexpr bool ok() const noexcept; |
(since C++20) |
Checks if the year and month values stored in this object are valid.
Return value
year().ok() && month().ok().
Example
#include <iostream>
#include <chrono>
int main()
{
std::cout << std::boolalpha;
constexpr std::chrono::year_month ym1 {std::chrono::year(2020), std::chrono::July};
std::cout << (ym1.ok()) << ' ';
constexpr std::chrono::year_month ym2 {std::chrono::year(2020)/16};
std::cout << (ym2.ok()) << '\n';
}
Output:
true false
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