std::chrono::day::ok
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std::chrono::day
Member functions
day::ok
Nonmember functions
Helper classes
(C++26)
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].
[edit] Return value
true if the day value stored in *this is in the range [1, 31]. Otherwise false.
[edit] 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() {}