std::chrono::operator<<(std::chrono::sys_time)
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std::chrono::system_clock
Member functions
Time point I/O
operator<<
Defined in header
<chrono>
template< class CharT, class Traits, class Duration >
(1)
(since C++20)
std::basic_ostream <CharT, Traits>&
operator<<( std::basic_ostream <CharT, Traits>& os,
template< class CharT, class Traits, class Duration >
(2)
(since C++20)
std::basic_ostream <CharT, Traits>&
operator<<( std::basic_ostream <CharT, Traits>& os,
Outputs tp into the stream os.
1) Equivalent to:
return os << std::format (os.getloc(), STATICALLY-WIDEN<CharT>("{:L%F %T}"), tp);
where STATICALLY_WIDEN<CharT>("{:L%F %T}") is "{:L%F %T}" if CharT is char, and L"{:L%F %T}" if CharT is wchar_t.
2) Equivalent to os << std::chrono::year_month_day (tp);.
[edit] Return value
os
[edit] 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
|