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std::use_facet

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< cpp‎ | locale

 
 
Bibliothèque localisations
Locales et facettes
Original:
Locales and facets
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locale
use_facet
Classification des caractères
Original:
Character classification
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Conversions
Original:
Conversions
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Classes de facettes catégorie de base
Original:
Facet category base classes
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Catégories de facettes
Original:
Facet categories
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Spécifique aux paramètres régionaux facettes
Original:
Locale-specific facets
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Facettes de conversion de code
Original:
Code conversion facets
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codecvt_utf8 (C++11)
codecvt_utf16 (C++11)
C locale
Original:
C locale
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Defined in header <locale>
template< class Facet >
const Facet& use_facet( const std::locale& loc );
Obtient une référence à une facette mis en œuvre par loc .
Original:
Obtains a reference to a facet implemented by loc.
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Sommaire

[modifier] Paramètres

loc -
l'objet locale à interroger
Original:
the locale object to query
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[modifier] Retourne la valeur

Renvoie une référence de la facette. La référence retournée par cette fonction est valide aussi longtemps que n'importe quel objet qui implémente std::locale existe Facet .
Original:
Returns a reference the facet. The reference returned by this function is valid as long as any std::locale object exists that implements Facet.
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[modifier] Exceptions

std::bad_cast if std::has_facet<Facet>(loc) == false.

[modifier] Exemple

Afficher le nom de la monnaie 3-lettre utilisée par les paramètres régionaux préféré de l'utilisateur
Original:
Display the 3-letter currency name used by the user's preferred locale
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#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';
}

Résultat :

Your currency string is USD

[modifier] Voir aussi

ensemble de facettes polymorphes qui encapsulent les différences culturelles
Original:
set of polymorphic facets that encapsulate cultural differences
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(classe) [edit]
vérifie si une locale met en œuvre une facette spécifique
Original:
checks if a locale implements a specific facet
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(fonction générique) [edit]