std::time_get
STD：时间[医]弄到
| Defined in header | | |
|---|---|---|
| template< class CharT, class InputIt = std::istreambuf_iterator<CharT> > class time_get; | | |
类模板std::time_get封装日期和时间解析规则。I/O机械手std::get_time使用std::time_getI/O流%27 s区域设置的方面，以将文本输入转换为std::tm对象。
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继承图
类型要求
-输入必须符合输入器的要求。
*。
专门性
标准库提供了两个独立的%28区域独立的%29完全专门化和两个部分专门化：
在标头中定义<locale>
*。
STD：时间[医]弄到<char>分析日期和时间的窄字符串表示
STD：时间[医]得到<wchar[医]分析日期和时间的宽字符串表示。
STD：时间[医]使用自定义输入迭代器获取<char、InputIt>解析日期和时间的窄字符串表示
STD：时间[医]得到<wchar[医]使用自定义输入迭代器解析日期和时间的宽字符串表示
此外，在C++程序中构造的每个locale对象都实现了自己的%28 locale特定于这些专门化的%29版本。
成员类型
| Member type | Definition |
|---|---|
| char_type | CharT |
| iter_type | InputIt |
成员函数
| (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) |
成员对象
| static std::locale::id id | id of the locale (public member object) |
|---|
受保护成员函数
| 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 | extacts 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 | extracts date/time components from input stream, according to the specified format (virtual protected member function) |
从STD：：Time继承而来[医]底座
| Type | Definition |
|---|---|
| dateorder | date order enumeration type, defining the values no_order, dmy, mdy, ymd, and ydm |
例
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#include <iostream>
#include <sstream>
#include <string>
#include <locale>
#include <ctime>
#include <iomanip>
int main()
{
std::wstring input = L"2011-Februar-18 23:12:34";
std::tm t;
std::wistringstream ss(input
ss.imbue(std::locale("de_DE")
ss >> std::get_time(&t, L"%Y-%b-%d %H:%M:%S" // uses std::time_get<wchar_t>
std::cout << std::asctime(&t
}
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产出：
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Sun Feb 18 23:12:34 2011
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另见
| time_put | formats contents of struct 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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