NAME¶

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

Synopsis¶

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& ym );

Outputs a textual representation of ym into the stream os, as if by

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

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

Return value¶

os.

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
locale

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> formats a year_month according to the
(C++20) provided format
(class template specialization)