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      std::wstring_convert::~wstring_convert

      De cppreference.com

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      <metanoindex/>

       
      C++
       
      Biblioteca localizações
      Localidades e facetas
      Original:
      Locales and facets
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      Classificação de caracteres
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      Character classification
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      Conversões
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      Conversions
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      Facet classes base da categoria
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      Facet category base classes
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      Categorias faceta
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      Facet categories
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      Específicos da localidade facetas
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      Locale-specific facets
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      Facetas de conversão de código
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      Code conversion facets
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      (C++11)
      (C++11)
      C localidade
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      C locale
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      std::wstring_convert
      Funções de membro
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      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();
      Destrói o objeto wstring_convert e elimina o ponteiro para a faceta de conversão.
      Original:
      Destroys the wstring_convert object and deletes the pointer to the conversion facet.
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      Notas

      Algumas implementações são capazes de excluir qualquer faceta, incluindo os aspectos específicos da localidade com destruidores protegidas. Outras implementações requerem a faceta de ter um destruidor pública, semelhantes aos dos aspectos independentes de localidade de <codecvt>. Este é 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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      Exemplo

      #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