std::chrono::operator<<(std::chrono::weekday_indexed)
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_indexed& wdi );
| (since C++20) |
Outputs a textual representation of wdi into the stream os, as if by:
if(wdi.index()>=1&&wdi.index()<=5) os<<std::format(os.getloc(),STATICALLY_WIDEN<CharT>("{:L}[{}]"), wdi.weekday(),wdi.index()); else os<<std::format(os.getloc(),STATICALLY_WIDEN<CharT>("{:L}[{} is not a valid index]"), wdi.weekday(),wdi.index());
where STATICALLY_WIDEN<CharT>("...") is "..." if CharT is char, and 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
|
(C++20) | stores formatted representation of the arguments in a new string (function template) |
|
(C++20) | formatting support for weekday (class template specialization) |
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