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std::time_get(3) C++ Standard Libary std::time_get(3) NAME std::time_get - std::time_get Synopsis Defined in header <locale> template< class CharT, class InputIt = std::istreambuf_iterator<CharT> > class time_get; Class template std::time_get encapsulates date and time parsing rules. The I/O manipulator std::get_time uses the std::time_get facet of the I/O stream's locale to convert text input to a std::tm object. std-time get-inheritance.svg Inheritance diagram Type requirements - InputIt must meet the requirements of LegacyInputIterator. Specializations Two standalone (locale-independent) full specializations and two partial specializations are provided by the standard library: Defined in header <locale> std::time_get<char> parses narrow string representations of date and time std::time_get<wchar_t> parses wide string representations of date and time std::time_get<char, InputIt> parses narrow string representations of date and time using custom input iterator std::time_get<wchar_t, InputIt> parses wide string representations of date and time using custom input iterator In addition, every locale object constructed in a C++ program imple- ments its own (locale-specific) versions of these specializations. Member types Member type Definition char_type CharT iter_type InputIt Member functions constructor constructs a new time_get facet (public member function) destructor destructs a time_get facet (protected member function) date_order invokes do_date_order (public member function) get_time invokes do_get_time (public member function) get_date invokes do_get_date (public member function) get_weekday invokes do_get_weekday (public member function) get_monthname invokes do_get_monthname (public member function) get_year invokes do_get_year (public member function) get invokes do_get (C++11) (public member function) Member objects static std::locale::id id id of the locale (public member object) Protected member functions do_date_order obtains preferred ordering of day, month, and year [virtual] (virtual protected member function) do_get_time extracts hours, minutes, and seconds from input stream [virtual] (virtual protected member function) do_get_date extracts month, day, and year from input stream [virtual] (virtual protected member function) do_get_weekday extracts the name of a day of the week from input stream [virtual] (virtual protected member function) do_get_monthname extacts a month name from input stream [virtual] (virtual protected member function) do_get_year extracts a year from input stream [virtual] (virtual protected member function) do_get extracts date/time components from input stream, according to the [virtual] (C++11) specified format (virtual protected member function) Inherited from std::time_base Type Definition dateorder date order enumeration type, defining the values no_order, dmy, mdy, ymd, and ydm Example note: choose clang to observe the output. libstdc++ does not cor- rectly implement the %b specifier: bug 78714 // Run this code #include <iostream> #include <sstream> #include <locale> #include <iomanip> int main() { std::tm t = {}; std::istringstream ss("2011-Februar-18 23:12:34"); ss.imbue(std::locale("de_DE.utf-8")); ss >> std::get_time(&t, "%Y-%b-%d %H:%M:%S"); if (ss.fail()) { std::cout << "Parse failed\n"; } else { std::cout << std::put_time(&t, "%c") << '\n'; } } Possible output: Sun Feb 18 23:12:34 2011 See also time_put formats contents of struct std::tm for output as character sequence (class template) get_time parses a date/time value of specified format (C++11) (function template) http://cppreference.com 2022.07.31 std::time_get(3)
NAME | Synopsis | Type requirements | Specializations | Member types | Member functions | Member objects | Protected member functions | Example | Possible output: | See also
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