NAME¶

std::chrono::day::ok - std::chrono::day::ok

Synopsis¶

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

Checks if the day value stored in *this is in the valid range, i.e., [1, 31].

Return value¶

true if the day value stored in *this is in the range [1, 31]. Otherwise false.

Example¶

// Run this code

#include <chrono>
using namespace std::chrono_literals;

constexpr std::chrono::day d0{00};
constexpr std::chrono::day d1{13};
constexpr std::chrono::day d2{42};

static_assert
(
d0 == 0d && !d0.ok() &&
d1 == 13d && d1.ok() &&
d2 == 42d && !d2.ok()
);

int main() {}

See also¶

operator unsigned retrieves the stored day value
(public member function)