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      std::weak_ptr::lock

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      std::weak_ptr
      Funções de membro
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      weak_ptr::use_count
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      <tbody> </tbody>
      std::shared_ptr<T> lock() const
      		 (desde C++11)
      Cria um novo shared_ptr que partes a propriedade do objeto gerenciado. Se não houver um objeto gerenciado, ou seja *this está vazia, então o shared_ptr voltou também está vazia.
      Original:
      Creates a new shared_ptr that shares ownership of the managed object. If there is no managed object, i.e. *this is empty, then the returned shared_ptr also is empty.
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      Efetivamente retorna expired() ? shared_ptr<T>() : shared_ptr<T>(*this).
      Original:
      Effectively returns expired() ? shared_ptr<T>() : shared_ptr<T>(*this).
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      Parâmetros

      (Nenhum)
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      (none)
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      Valor de retorno

      A shared_ptr que compartilha a propriedade do objeto de propriedade.
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      A shared_ptr which shares ownership of the owned object.
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      Exceções

      noexcept specification:  
      <tbody> </tbody>
      noexcept
        (desde C++11)

      Notas

      Tanto esta função eo construtor de shared_ptr pode ser usado para adquirir a propriedade temporária do objeto gerenciado. A diferença é que o construtor de std::shared_ptr<T> lança uma exceção quando o argumento std::weak_ptr está vazio, enquanto constrói uma std::weak_ptr<T>::lock() std::shared_ptr<T> vazio.
      Original:
      Both this function and the constructor of shared_ptr may be used to acquire temporary ownership of the managed object. The difference is that the constructor of std::shared_ptr<T> throws an exception when the std::weak_ptr argument is empty, while std::weak_ptr<T>::lock() constructs an empty std::shared_ptr<T>.
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      Exemplo

      Esta seção está incompleta
      Motivo: sem exemplo

      Veja também
      Verifica se o objeto referenciado já foi excluído
      Original:
      checks whether the referenced object was already deleted
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      (função pública membro) [edit]