std::chrono::year_month::ok

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< cpp‎ | chrono‎ | year month
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C-style date and time
std::chrono::year_month
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

Run this code
#include <chrono>
using namespace std::chrono_literals;
 
int main()
{
    constexpr std::chrono::year_month ym1{3030y, std::chrono::July};
    static_assert(ym1.ok());
 
    constexpr std::chrono::year_month ym2{std::chrono::year(2020)/16};
    static_assert(!ym2.ok());
}
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