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    std::wstring_convert::~wstring_convert

    De cppreference.com

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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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    std::wstring_convert
    Les fonctions membres
    Original:
    Member functions
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    wstring_convert::wstring_convert
    wstring_convert::~wstring_convert
    wstring_convert::from_bytes
    wstring_convert::to_bytes
    wstring_convert::converted
    wstring_convert::state
     
    <tbody> </tbody>
    ~wstring_convert();
    Détruit l'objet wstring_convert et supprime le pointeur sur la facette conversion .
    Original:
    Destroys the wstring_convert object and deletes the pointer to the conversion facet.
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    Notes

    Certaines implémentations sont en mesure de supprimer toutes les facettes, y compris les aspects spécifiques de la localisation avec les destructeurs protégées. D'autres implémentations nécessitent la facette d'avoir un destructeur public, similaire à celle des paramètres régionaux indépendants facettes de <codecvt>. C'est LWG issue 721
    Original:
    Some implementations are able to delete any facet, including the locale-specific facets with protected destructors. Other implementations require the facet to have a public destructor, similar to the the locale-independent facets from <codecvt>. This is LWG issue 721
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    Exemple

    #include <locale>
#include <utility>
#include <codecvt>

// utility wrapper to adapt locale-bound facets for wstring/wbuffer convert
template<class Facet>
struct deletable_facet : Facet
{
    template<class ...Args>
    deletable_facet(Args&& ...args) : Facet(std::forward<Args>(args)...) {}
    ~deletable_facet() {}
};

int main()
{
    // GB18030 / UCS4 conversion, using locale-based facet directly
    // typedef std::codecvt_byname<char32_t, char, std::mbstate_t> gbfacet_t;
    // Compiler error: "calling a protected destructor of codecvt_byname<> in ~wstring_convert"
    // std::wstring_convert<gbfacet_t> gbto32(new gbfacet_t("zh_CN.gb18030"));

    // GB18030 / UCS4 conversion facet using a facet with public destructor
    typedef deletable_facet<std::codecvt_byname<char32_t, char, std::mbstate_t>> gbfacet_t;
    std::wstring_convert<gbfacet_t> gbto32(new gbfacet_t("zh_CN.gb18030"));
} // destructor called here