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      std::uses_allocator

      De cppreference.com
      < cpp‎ | memory

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      C++
       
      Bibliothèque d'utilitaires
       
      La gestion dynamique de la mémoire
      Faible niveau de gestion de la mémoire
      Répartiteurs
      Original:
      Allocators
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      allocator
      allocator_traits (C++11)
      allocator_arg_t (C++11)
      allocator_arg (C++11)
      uses_allocator (C++11)
      scoped_allocator_adaptor (C++11)
      Non initialisée stockage
      Original:
      Uninitialized storage
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      uninitialized_copy
      uninitialized_copy_n (C++11)
      uninitialized_fill
      uninitialized_fill_n
      raw_storage_iterator
      get_temporary_buffer
      return_temporary_buffer
      Pointeurs intelligents
      Original:
      Smart pointers
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      unique_ptr (C++11)
      shared_ptr (C++11)
      weak_ptr (C++11)
      auto_ptr (obsolète)
      owner_less (C++11)
      enable_shared_from_this (C++11)
      bad_weak_ptr (C++11)
      default_delete (C++11)
      Soutien garbage collection
      Original:
      Garbage collection support
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      declare_reachable (C++11)
      undeclare_reachable (C++11)
      declare_no_pointers (C++11)
      undeclare_no_pointers (C++11)
      pointer_safety (C++11)
      get_pointer_safety (C++11)
      Divers
      Original:
      Miscellaneous
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      pointer_traits (C++11)
      addressof (C++11)
      align (C++11)
      Bibliothèque C
      Original:
      C Library
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      Déclaré dans l'en-tête <memory>
      template<class T, class Alloc >
      struct uses_allocator
      		 (depuis C++11)
      Si T a une allocator_type membre typedef qui est convertible à partir Alloc, fournit du membre de constante égale à valuetrue. Sinon value est false .
      Original:
      If T has a member typedef allocator_type which is convertible from Alloc, provides the member constant value equal to true. Otherwise value is false.
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      Sommaire

      Inherited from std::integral_constant

      Member constants

      value
      [
      statique
      Original:
      static
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      ]
      true si T uses allocator Alloc, false autrement
      Original:
      true if T uses allocator Alloc, false otherwise
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      (constante membre statique publique)

      Member functions

      operator bool
      convertit l'objet en bool, retourne value
      Original:
      converts the object to bool, returns value
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      (fonction membre publique)

      Member types

      Type d'
      Original:
      Type
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      		 Definition
      value_typebool
      typestd::integral_constant<bool, value>

      [modifier]Spécialisations

      Spécialisations personnalisés de ce trait de type std::uses_allocator sont autorisés pour les types qui n'ont pas la allocator_type membre typedef, mais satisfaire à l'une des deux conditions suivantes:
      Original:
      Custom specializations of the type trait std::uses_allocator are allowed for types that do not have the member typedef allocator_type but satisfy one of the following two requirements:
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      1)
      T a un constructeur qui prend std::allocator_arg_t comme premier argument, et Alloc comme second argument .
      Original:
      T has a constructor which takes std::allocator_arg_t as the first argument, and Alloc as the second argument.
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      2)
      T a un constructeur qui prend Alloc comme dernier argument .
      Original:
      T has a constructor which takes Alloc as the last argument.
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      Les spécialisations suivantes sont déjà fournis par la bibliothèque standard:
      Original:
      The following specializations are already provided by the standard library:
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      (C++11)
      se spécialise le trait de type std::uses_allocator
      Original:
      specializes the std::uses_allocator type trait
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      (classe générique spécialisée)[edit]
      (C++11)
      se spécialise le trait de type std::uses_allocator
      Original:
      specializes the std::uses_allocator type trait
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      (fonction générique)[edit]
      (C++11)
      se spécialise le trait de type std::uses_allocator
      Original:
      specializes the std::uses_allocator type trait
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      (fonction générique)[edit]
      (C++11)
      se spécialise le trait de type std::uses_allocator
      Original:
      specializes the std::uses_allocator type trait
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      (fonction générique)[edit]
      (C++11)
      		 spécialise std::uses_allocator
      (classe générique spécialisée)[edit]
      (C++11)
      se spécialise le trait de type std::uses_allocator
      Original:
      specializes the std::uses_allocator type trait
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      (classe générique spécialisée)[edit]
      (C++11)
      se spécialise le trait de type std::uses_allocator
      Original:
      specializes the std::uses_allocator type trait
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      (classe générique spécialisée)[edit]

      [modifier]Notes

      Ce trait type est utilisé par std::scoped_allocator_adaptor et peut être utilisé par les répartiteurs personnalisés afin de déterminer si l'objet en cours de construction est lui-même capable d'utiliser un allocateur (par exemple un conteneur), auquel cas un allocateur doit être transmis à son constructeur .
      Original:
      This type trait is used by std::scoped_allocator_adaptor and may be used by custom allocators to determine whether the object being constructed is itself capable of using an allocator (e.g. is a container), in which case an allocator should be passed to its constructor.
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      [modifier]Voir aussi

      (C++11)
      un objet de std::allocator_arg_t type utilisé pour sélectionner allocateur-aware constructeurs
      Original:
      an object of type std::allocator_arg_t used to select allocator-aware constructors
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      (constante)[edit]
      (C++11)
      type de variable utilisé pour sélectionner surcharges de constructeur allocateur-aware
      Original:
      tag type used to select allocator-aware constructor overloads
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      (classe)[edit]
      (C++11)
      met en oeuvre plusieurs niveaux d'affectation de niveaux multiples récipients
      Original:
      implements multi-level allocator for multi-level containers
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      (classe générique)[edit]
      Récupérée de « https://fr.cppreference.com/mwiki/index.php?title=cpp/memory/uses_allocator&oldid=48760 »
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