Defined in header <chrono> | ||
|---|---|---|
template< class CharT, class Traits, class Duration >
std::basic_ostream<CharT, Traits>&
operator<<( std::basic_ostream<CharT, Traits>& os,
const std::chrono::hh_mm_ss<Duration>& t );
| (since C++20) |
Outputs t into the stream os.
Equivalent to return os << std::format(os.getloc(), STATICALLY_WIDEN<CharT>("{:L%T}"), hms); where STATICALLY_WIDEN<CharT>("{:L%T}") is "{:L%T}" if CharT is char, and L"{:L%T}" if CharT is wchar_t.
| os | - | the output stream. |
| t | - | the time of day to be output. |
os.
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 |
|
(C++20) | stores formatted representation of the arguments in a new string (function template) |
|
(C++20) | formatting support for hh_mm_ss (class template specialization) |
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