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std::chrono::operator<<(std::chrono::year_month_weekday)(3) C++ Standard Libary std::chrono::operator<<(std::chrono::year_month_weekday)(3)


std::chrono::operator<<(std::chrono::year_month_weekday) - std::chrono::operator<<(std::chrono::year_month_weekday)


Defined in header <chrono>
template< class CharT, class Traits >

std::basic_ostream<CharT, Traits>& (since C++20)
operator<<( std::basic_ostream<CharT, Traits>& os,

const std::chrono::year_month_weekday& ymwd );

Outputs a textual representation of ymwd into os, as if by

os << std::format(os.getloc(), STATICALLY_WIDEN<CharT>("{}/{:L}/{:L}"),
ymwd.year(), ymwd.month(), ymwd.weekday_indexed());

where STATICALLY_WIDEN<CharT>("{}/{:L}/{:L}") is "{}/{:L}/{:L}" if CharT is char,
and L"{}/{:L}/{:L}" if CharT is wchar_t.

Return value


Defect reports

The following behavior-changing defect reports were applied retroactively to
previously published C++ standards.

DR Applied to Behavior as published Correct behavior
P2372R3 C++20 the given locale was used by default L is needed to use the given

See also

format stores formatted representation of the
(C++20) arguments in a new string
(function template)
specialization of std::formatter that
std::formatter<std::chrono::year_month_day> formats a year_month_day according to
(C++20) the provided format
(class template specialization)