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

 

C++

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chrono I/O
parse (C++20)
C-style date and time

 

std::chrono::year_month_weekday

Member functions

year_month_weekday::year_month_weekday

year_month_weekday::operator+=year_month_weekday::operator-=

year_month_weekday::yearyear_month_weekday::monthyear_month_weekday::weekdayyear_month_weekday::indexyear_month_weekday::weekday_indexed

year_month_weekday::operator sys_daysyear_month_weekday::operator local_days

year_month_weekday::ok

Nonmember functions

operator==

operator+operator-

operator<<

Helper classes

formatter<std::chrono::year_month_weekday>

 

Defined in header <chrono>
template< class CharT, class Traits > std::basic_ostream<CharT, Traits>& operator<<( std::basic_ostream<CharT, Traits>& os,             const std::chrono::year_month_weekday& ymwd );		(since C++20)

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

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