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

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 & ym ) ;		(since C++20)

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 .

Contents 1 Return value 2 Example 3 Defect reports 4 See also

Return value

os

Example

This section is incomplete Reason: no example

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> (C++20)	formatting support for year_month (class template specialization)