std::chrono::operator<<(std::chrono::hh_mm_ss)

From cppreference.com
< cpp‎ | chrono‎ | hh mm ss
C++
Date and time library
Time point
(C++11)
(C++20)
Duration
(C++11)
Clocks
(C++11)
(C++11)
(C++20)
(C++20)
(C++20)
(C++11)
(C++20)
(C++20)
(C++20)
Time of day
(C++20)(C++20)
(C++20)(C++20)
(C++20)

Calendar
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)(C++20)
Time zone
(C++20)
(C++20)
(C++20) (C++20) (C++20) (C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
chrono I/O
(C++20)
C-style date and time
std::chrono::hh_mm_ss
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

Parameters

os - the output stream
t - the time of day to be output

Return value

os

Example

This section is incomplete
Reason: no example

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 hh_mm_ss
(class template specialization)
Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/chrono/hh_mm_ss/operator_ltlt&oldid=161593