std::time_get<CharT,InputIt>::date_order, std::time_get<CharT,InputIt>::do_date_order
Defined in header <locale> |
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(1) | |
|
(2) |
1) Public member function, calls the protected virtual member function
do_date_order of the most derived class.
2) Returns a value of type
std::time_base::dateorder, which describes the default date format used by this locale (expected by get_date() and produced by std::strftime() with format specifier '%x').
The valid values (inherited from std::time_base) are:
no_order |
the format contains variable items (week day, Julian day, etc), or this function is not implemented |
dmy |
day, month, year (European locales) |
mdy |
month, day, year (American locales) |
ymd |
year, month, day (Asian locales) |
ydm |
year, day, month (rare) |
Parameters
(none)
Return value
A value of type dateorder.
Notes
This function is optional, it may return no_order in every case.
Example
The output below was obtained using clang (libc++).
#include <iostream>
#include <locale>
void show_date_order()
{
std::time_base::dateorder d = std::use_facet<std::time_get<char>>(
std::locale()
).date_order();
switch (d)
{
case std::time_base::no_order:
std::cout << "no_order\n";
break;
case std::time_base::dmy:
std::cout << "day, month, year\n";
break;
case std::time_base::mdy:
std::cout << "month, day, year\n";
break;
case std::time_base::ymd:
std::cout << "year, month, day\n";
break;
case std::time_base::ydm:
std::cout << "year, day, month\n";
break;
}
}
int main()
{
std::locale::global(std::locale("en_US.utf8"));
std::cout << "In U.S. locale, the default date order is: ";
show_date_order();
std::locale::global(std::locale("ja_JP.utf8"));
std::cout << "In Japanese locale, the default date order is: ";
show_date_order();
std::locale::global(std::locale("de_DE.utf8"));
std::cout << "In German locale, the default date order is: ";
show_date_order();
}Possible output:
In U.S. locale, the default date order is: month, day, year
In Japanese locale, the default date order is: year, month, day
In German locale, the default date order is: day, month, yearSee also
|
[virtual]
|
extracts month, day, and year from input stream (virtual protected member function) |
| defines date format constants (class) |
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