std::chrono::day::ok

 

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std::chrono::day

Member functions

day::day

day::operator++day::operator--

day::operator+=day::operator-=

day::operator unsigned

day::ok

Nonmember functions

operator==operator<=>

operator+operator-

operator<<

from_stream

operator""d

Helper classes

formatter<std::chrono::day>

hash<std::chrono::day> (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].

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)