std::literals::chrono_literals::operator""d (3) - Linux Manuals

std::literals::chrono_literals::operator""d: std::literals::chrono_literals::operator""d


std::literals::chrono_literals::operator""d - std::literals::chrono_literals::operator""d


Defined in header <chrono>
constexpr std::chrono::day operator ""d(unsigned long long d) noexcept; (1) (since C++20)

Forms a std::chrono::day literal representing a day of the month in the calendar.


d - the day value

Return value

A std::chrono::day storing d. If d > 255, the stored value is unspecified.

Possible implementation

  constexpr std::chrono::day operator ""d(unsigned long long d) noexcept
      return std::chrono::day(d);


This operator is declared in the namespace std::literals::chrono_literals, where both literals and chrono_literals are inline namespaces. Access to this operator can be gained with using namespace std::literals, using namespace std::chrono_literals, and using namespace std::literals::chrono_literals.
In addition, within the namespace std::chrono, the directive using namespace literals::chrono_literals; is provided by the standard library, so that if a programmer uses using namespace std::chrono; to gain access to the classes in the chrono library, the corresponding literal operators become visible as well.


 This section is incomplete
 Reason: no example

See also

              constructs a day
constructor (public member function of std::chrono::day)