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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 If a std::time_get specialization is not guaranteed to be provided by the standard library (see below), the behaviors of its member functions (except the constructor and destructor) are not guaranteed as specified. Specializations The standard library is guaranteed to provide the following special- izations (they are required to be implemented by any locale object): 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 In addition, the standard library is also guaranteed to provide every specialization that satisfies the following type requirements: * CharT is one of char and wchar_t, and * InputIt must meet the requirements of LegacyInputIterator. 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 extracts 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 <iomanip> #include <iostream> #include <locale> #include <sstream> 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 std::tm for output as character se- quence (class template) get_time parses a date/time value of specified format (C++11) (function template) http://cppreference.com 2024.06.10 std::time_get(3)
NAME | Synopsis | Specializations | Member types | Member functions | Member objects | Protected member functions | Example | Possible output: | See also
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