std::aligned_union - cppreference.com
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      std::aligned_union

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      <tbody> </tbody>
      Definido no cabeçalho <type_traits>
      template< std::size_t Len, class... Types > struct aligned_union;
      		 (desde C++11)
      Fornece a type membro typedef, que é um tipo POD adequado para utilização como armazenamento não inicializada, correctamente alinhadas para um objecto de qualquer um dos tipos enumerados no Types. O tamanho do armazenamento é de pelo menos Len. std::aligned_union também determina a estrita exigência de alinhamento (maior) entre todos Types e torna disponível como o alignment_value constante.
      Original:
      Provides the member typedef type, which is a POD type suitable for use as uninitialized storage, correctly aligned for an object of any of the types listed in Types. The size of the storage is at least Len. std::aligned_union also determines the strictest (largest) alignment requirement among all Types and makes it available as the constant alignment_value.
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      Tipos de membro

      Nome
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      Name
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      		 Definition
      type
      do tipo POD adequado para o armazenamento de qualquer tipo de Types
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      the POD type suitable for storage of any type from Types
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      Constantes de membros

      alignment_value
      [estática]
      o requisito estrito alinhamento de todos Types
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      the strictest alignment requirement of all Types
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      (membro estático público constante)

      Exemplo

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      Motivo: sem exemplo

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