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    std::use_facet

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    <metanoindex/>

     
    C++
     
    Bibliothèque localisations
    Locales et facettes
    Original:
    Locales and facets
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    locale
    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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    <tbody> </tbody>
    Déclaré dans l'en-tête <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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    Paramètres

    loc -
    l'objet locale à interroger
    Original:
    the locale object to query
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    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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    Exceptions

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

    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

    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]