NAME¶

std::chrono::month::ok - std::chrono::month::ok

Synopsis¶

constexpr bool ok() const noexcept; (since C++20)

Checks if the month value stored in *this is in the valid range, i.e., [1, 12].

Return value¶

true if the month value stored in *this is in the range [1, 12]. Otherwise false.

Example¶

// Run this code

#include <chrono>
#include <iostream>

int main()
{
for (const unsigned mm : {6u, 0u, 16U})
{
std::cout << mm << ": ";
const std::chrono::month m{mm};
m.ok() ? std::cout << "month is valid\n"
: std::cout << "month is invalid\n";
}
}

Output:¶

6: month is valid
0: month is invalid
16: month is invalid