std::chrono::operator<<(std::chrono::day) (3) - Linux Manuals
std::chrono::operator<<(std::chrono::day): std::chrono::operator<<(std::chrono::day)
NAME
std::chrono::operator<<(std::chrono::day) - std::chrono::operator<<(std::chrono::day)
Synopsis
template <class CharT, class Traits>
std::basic_ostream<CharT, Traits>& (since C++20)
operator<<(std::basic_ostream<CharT, Traits>& os, const std::chrono::day& d);
Forms a std::basic_string<CharT> s consisting of the day value stored in d formatted as a decimal number, with a leading zero if the result would otherwise be a single decimal digit. Inserts that string into os. Then, if !d.ok(), inserts the string " is not a valid day" into os.
Return value
os.
Notes
This operator<< is primarily intended for debugging use. For control over formatting, use std::chrono::format.
See also
format formats a streamable chrono object for insertion
(C++20)
to_stream (function template)