std::time_get
From cppreference.com
| Defined in header <locale>
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| template< class CharT, |
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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.
Inheritance diagram
Type requirements
-InputIt must meet the requirements of LegacyInputIterator.
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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 implements its own (locale-specific) versions of these specializations.
Member types
| Member type | Definition |
char_type
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CharT
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iter_type
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InputIt
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Member functions
| constructs a new time_get facet (public member function) | |
| destructs a time_get facet (protected member function) | |
invokes do_date_order (public member function) | |
invokes do_get_time (public member function) | |
invokes do_get_date (public member function) | |
invokes do_get_weekday (public member function) | |
invokes do_get_monthname (public member function) | |
invokes do_get_year (public member function) | |
| (C++11) |
invokes do_get (public member function) |
Member objects
| static std::locale::id id |
id of the locale (public member object) |
Protected member functions
| [virtual] |
obtains preferred ordering of day, month, and year (virtual protected member function) |
| [virtual] |
extracts hours, minutes, and seconds from input stream (virtual protected member function) |
| [virtual] |
extracts month, day, and year from input stream (virtual protected member function) |
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extracts the name of a day of the week from input stream (virtual protected member function) |
| [virtual] |
extacts a month name from input stream (virtual protected member function) |
| [virtual] |
extracts a year from input stream (virtual protected member function) |
| [virtual] (C++11) |
extracts date/time components from input stream, according to the specified format (virtual protected member function) |
Inherited from std::time_base
| Type | Definition |
dateorder
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date order enumeration type, defining the values no_order, dmy, mdy, ymd, and ydm
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Example
note: choose clang to observe the output. libstdc++ does not correctly 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
| formats contents of struct std::tm for output as character sequence (class template) | |
| (C++11) |
parses a date/time value of specified format (function template) |