Defined in header <locale> | ||
|---|---|---|
template< class Facet > const Facet& use_facet( const std::locale& loc ); |
Obtains a reference to a facet implemented by loc.
| loc | - | the locale object to query |
Returns a reference to the facet. The reference returned by this function is valid as long as any std::locale object exists that implements Facet.
std::bad_cast if std::has_facet<Facet>(loc) == false.
Display the 3-letter currency name used by the user's preferred locale.
#include <iostream>
#include <locale>
int main()
{
std::locale loc = std::locale(""); // user's preferred locale
std::cout << "Your currency string is "
<< std::use_facet<std::moneypunct<char, true>>(loc).curr_symbol() << '\n';
}Output:
Your currency string is USD
| set of polymorphic facets that encapsulate cultural differences (class) |
|
| checks if a locale implements a specific facet (function template) |
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