std::chrono::operator<< (std::chrono::weekday_last)
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                    < cpp | chrono | weekday last
                    
                                                            
                    | template <class CharT, class Traits> std::basic_ostream<CharT, Traits>& | (since C++20) | |
Outputs a textual representation of wdl into the stream os, as if by os << wdl.weekday() << "[last]";.
Return value
os.
Notes
This operator<< is primarily intended for debugging use. When used with non-default stream flags, the output may be surprising:
auto wdl = std::chrono::Sunday[std::chrono::last]; std::cout.width(10); std::cout.fill('-'); std::cout << std::left << wdl; // may output "Sun-------[last]"