The Linux Manuals (man pages) document is an important part of Linux documents. Linux Manuals are organized as several sections. Each section has a group of commands for a specific area in Linux usage, administration or development.
std::chrono::tzdb – std::chrono::tzdb Synopsis Defined in header <chrono> struct tzdb; (since C++20) The class tzdb represents a copy of the IANA_time_zone_database. Users cannot construct a tzdb and can only obtain read-only access to one via the free functions std::chrono::get_tzdb_list and std::chrono::get_tzdb. Member objects Member object Description version A std::string that contains the version of the…
std::chrono::treat_as_floating_point – std::chrono::treat_as_floating_point Synopsis Defined in header<chrono> template <class Rep> (since C++ 11) struct treat_as_floating_point : std::is_floating_point<Rep> { }; The std::chrono::treat_as_floating_point trait helps determine if a duration can be converted to another duration with a different tick period. Implicit conversions between two durations normally depends on the tick period of the durations. However, implicit conversions…
std::chrono::to_stream(std::chrono::zoned_time) – std::chrono::to_stream(std::chrono::zoned_time) Synopsis template <class CharT, class Traits, class Duration, class TimeZonePtr> std::basic_ostream<CharT, Traits> &(since C++ 20) to_stream(std::basic_ostream<CharT, Traits> &os, const CharT *fmt, const std::chrono::zoned_time<Duration, TimeZonePtr> &tp); Outputs tp to the stream os, formatted according to the null-terminated format string fmt. Equivalent to auto info = tp.get_info(); return std::chrono::to_stream(os, fmt, tp.get_local_time(), &info.abbrev, &info.offset); Format…
std::chrono::to_stream(std::chrono::year_month_day) – std::chrono::to_stream(std::chrono::year_month_day) Synopsis template <class CharT, class Traits> std::basic_ostream<CharT, Traits> &(since C++ 20) to_stream(std::basic_ostream<CharT, Traits> &os, const CharT *fmt, const std::chrono::year_month_day &ymd); Outputs ymd to the stream os, formatted according to the null-terminated format string fmt. Format string The format string consists of zero or more conversion specifiers and ordinary characters. All ordinary characters,…
std::chrono::to_stream(std::chrono::year_month) – std::chrono::to_stream(std::chrono::year_month) Synopsis template <class CharT, class Traits> std::basic_ostream<CharT, Traits> &(since C++ 20) to_stream(std::basic_ostream<CharT, Traits> &os, const CharT *fmt, const std::chrono::year_month &ym); Outputs ym to the stream os, formatted according to the null-terminated format string fmt. Format string The format string consists of zero or more conversion specifiers and ordinary characters. All ordinary characters,…
std::chrono::to_stream(std::chrono::year) – std::chrono::to_stream(std::chrono::year) Synopsis template <class CharT, class Traits> std::basic_ostream<CharT, Traits> &(since C++ 20) to_stream(std::basic_ostream<CharT, Traits> &os, const CharT *fmt, const std::chrono::year &y); Outputs y to the stream os, formatted according to the null-terminated format string fmt. Format string The format string consists of zero or more conversion specifiers and ordinary characters. All ordinary characters,…
std::chrono::to_stream(std::chrono::weekday) – std::chrono::to_stream(std::chrono::weekday) Synopsis template <class CharT, class Traits> std::basic_ostream<CharT, Traits> &(since C++ 20) to_stream(std::basic_ostream<CharT, Traits> &os, const CharT *fmt, const std::chrono::weekday &wd); Outputs wd to the stream os, formatted according to the null-terminated format string fmt. Format string The format string consists of zero or more conversion specifiers and ordinary characters. All ordinary characters,…
std::chrono::to_stream(std::chrono::utc_time) – std::chrono::to_stream(std::chrono::utc_time) Synopsis template <class CharT, class Traits, class Duration> std::basic_ostream<CharT, Traits> &(since C++ 20) to_stream(std::basic_ostream<CharT, Traits> &os, const CharT *fmt, const std::chrono::utc_time<Duration> &tp); Outputs tp to the stream os, formatted according to the null-terminated format string fmt. If %Z is used, it is replaced with "UTC" widened to CharT. If %z or a…
std::chrono::to_stream(std::chrono::tai_time) – std::chrono::to_stream(std::chrono::tai_time) Synopsis template <class CharT, class Traits, class Duration> std::basic_ostream<CharT, Traits> &(since C++ 20) to_stream(std::basic_ostream<CharT, Traits> &os, const CharT *fmt, const std::chrono::tai_time<Duration> &tp); Outputs tp to the stream os, formatted according to the null-terminated format string fmt. If %Z is used, it is replaced with "TAI" widened to CharT. If %z or a…
std::chrono::to_stream(std::chrono::sys_time) – std::chrono::to_stream(std::chrono::sys_time) Synopsis template <class CharT, class Traits, class Duration> std::basic_ostream<CharT, Traits> &(since C++ 20) to_stream(std::basic_ostream<CharT, Traits> &os, const CharT *fmt, const std::chrono::sys_time<Duration> &tp); Outputs tp to the stream os, formatted according to the null-terminated format string fmt. If %Z is used, it is replaced with "UTC" widened to CharT. If %z or a…
std::chrono::to_stream(std::chrono::month_day) – std::chrono::to_stream(std::chrono::month_day) Synopsis template <class CharT, class Traits> std::basic_ostream<CharT, Traits> &(since C++ 20) to_stream(std::basic_ostream<CharT, Traits> &os, const CharT *fmt, const std::chrono::month_day &md); Outputs md to the stream os, formatted according to the null-terminated format string fmt. Format string The format string consists of zero or more conversion specifiers and ordinary characters. All ordinary characters,…
std::chrono::to_stream(std::chrono::month) – std::chrono::to_stream(std::chrono::month) Synopsis template <class CharT, class Traits> std::basic_ostream<CharT, Traits> &(since C++ 20) to_stream(std::basic_ostream<CharT, Traits> &os, const CharT *fmt, const std::chrono::month &m); Outputs m to the stream os, formatted according to the null-terminated format string fmt. Format string The format string consists of zero or more conversion specifiers and ordinary characters. All ordinary characters,…
std::chrono::to_stream(std::chrono::local_time) – std::chrono::to_stream(std::chrono::local_time) Synopsis template <class CharT, class Traits, class Duration> std::basic_ostream<CharT, Traits> & to_stream(std::basic_ostream<CharT, Traits> &os, const CharT *fmt, (since C++ 20) const std::chrono::local_time<Duration> &tp, const std::string *abbrev = nullptr, const std::chrono::seconds *offset_sec = nullptr); Outputs tp to the stream os, formatted according to the null-terminated format string fmt. If %Z is used, it…
std::chrono::to_stream(std::chrono::gps_time) – std::chrono::to_stream(std::chrono::gps_time) Synopsis template <class CharT, class Traits, class Duration> std::basic_ostream<CharT, Traits> &(since C++ 20) to_stream(std::basic_ostream<CharT, Traits> &os, const CharT *fmt, const std::chrono::gps_time<Duration> &tp); Outputs tp to the stream os, formatted according to the null-terminated format string fmt. If %Z is used, it is replaced with "GPS" widened to CharT. If %z or a…
std::chrono::to_stream(std::chrono::file_time) – std::chrono::to_stream(std::chrono::file_time) Synopsis template <class CharT, class Traits, class Duration> std::basic_ostream<CharT, Traits> &(since C++ 20) to_stream(std::basic_ostream<CharT, Traits> &os, const CharT *fmt, const std::chrono::file_time<Duration> &tp); Outputs tp to the stream os, formatted according to the null-terminated format string fmt. If %Z is used, it is replaced with "UTC" widened to CharT. If %z or a…
std::chrono::to_stream(std::chrono::duration) – std::chrono::to_stream(std::chrono::duration) Synopsis template <class CharT, class Traits, class Rep, class Period> std::basic_ostream<CharT, Traits> &(since C++ 20) to_stream(std::basic_ostream<CharT, Traits> &os, const CharT *fmt, const std::chrono::duration<Rep, Period> &d); Outputs d (interpreted as a time of day since midnight) to the stream os, formatted according to the null-terminated format string fmt. Format string The format string…
std::chrono::to_stream(std::chrono::day) – std::chrono::to_stream(std::chrono::day) Synopsis template <class CharT, class Traits> std::basic_ostream<CharT, Traits> &(since C++ 20) to_stream(std::basic_ostream<CharT, Traits> &os, const CharT *fmt, const std::chrono::day &d); Outputs d to the stream os, formatted according to the null-terminated format string fmt. Format string The format string consists of zero or more conversion specifiers and ordinary characters. All ordinary characters,…
std::chrono::time_zone::to_sys – std::chrono::time_zone::to_sys Synopsis template <class Duration> auto to_sys(const std::chrono::local_time<Duration> &tp) const(since C++ 20) -> std::chrono::sys_time<std::common_type_t<Duration, std::chrono::seconds>>; template <class Duration> auto to_sys(const std::chrono::local_time<Duration> &tp, std::chrono::choose z) const(since C++ 20) -> std::chrono::sys_time<std::common_type_t<Duration, std::chrono::seconds>>; Converts the local_time tp in this time zone to the corresponding sys_time. 1) Throws an exception if the conversion is ambiguous or if…
std::chrono::time_zone::to_local – std::chrono::time_zone::to_local Synopsis template <class Duration> auto to_local(const std::chrono::sys_time<Duration> &tp) const(since C++ 20) -> std::chrono::local_time<std::common_type_t<Duration, std::chrono::seconds>>; Converts the sys_time tp to the corresponding local_time in this time zone. Return value The local_time associated with tp and this time zone. Notes The precision of the result is at least std::chrono::seconds, and will be finer if…
std::chrono::time_zone::name – std::chrono::time_zone::name Synopsis std::string_view name() const noexcept; (since C++20) Obtains the name of this time zone. Return value The name of this time zone (e.g., "America/New_York").