std::chrono::operator<<(std::chrono::weekday_last)

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< cpp‎ | chrono‎ | weekday last
 
 
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Defined in header <chrono>
template< class CharT, class Traits >

std::basic_ostream<CharT, Traits>&

operator<<( std::basic_ostream<CharT, Traits>& os, const std::chrono::weekday_last& wdl );
(since C++20)

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

os << std::format(os.getloc(), STATICALLY_WIDEN<CharT>("{:L}[last]"), wdl.weekday());

where STATICALLY_WIDEN<CharT>("{:L}[last]") is "{:L}[last]" if CharT is char, and L"{:L}[last]" 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

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