Defined in header <chrono> | ||
---|---|---|
template< class CharT, class Traits > std::basic_ostream<CharT, Traits>& operator<<( std::basic_ostream<CharT, Traits>& os, const std::chrono::month_weekday_last& mwdl ); | (since C++20) |
Outputs a textual representation of mwdl
into os
, as if by.
os << std::format(os.getloc(), STATICALLY_WIDEN<CharT>("{:L}/{:L}"),
mwdl.month(), mwdl.weekday_last());
where STATICALLY_WIDEN<CharT>("{:L}/{:L}")
is "{:L}/{:L}"
if CharT
is char
, and L"{:L}/{:L}"
if CharT
is wchar_t
.
os
.
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 |
(C++20) | stores formatted representation of the arguments in a new string (function template) |
(C++20) | formatting support for month (class template specialization) |
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