# std::time_get

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< cpp‎ | locale

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.

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 specializations (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 (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

do_date_order [virtual] | obtains preferred ordering of day, month, and year (virtual protected member function)
do_get_time [virtual] | extracts hours, minutes, and seconds from input stream (virtual protected member function)
do_get_date [virtual] | extracts month, day, and year from input stream (virtual protected member function)
do_get_weekday [virtual] | extracts the name of a day of the week from input stream (virtual protected member function)
do_get_monthname [virtual] | extracts a month name from input stream (virtual protected member function)
do_get_year [virtual] | extracts a year from input stream (virtual protected member function)
do_get [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` | 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 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

time_put | formats contents of std::tm for output as character sequence (class template)
get_time (C++11) | parses a date/time value of specified format (function template)

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