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    DefaultConstructible

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    <metanoindex/>

     
    C++
     
    C + + concepts
    De base
    Original:
    Basic
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    Bibliothèque échelle
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    Library-Wide
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    NullablePointer (C++11)
    Hash (C++11)
    Allocator
    Récipient
    Original:
    Container
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    Éléments de conteneurs
    Original:
    Container Elements
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    CopyInsertable (C++11)
    MoveInsertable (C++11)
    Iterator
    Original:
    Iterator
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    Nombres aléatoires
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    Random Numbers
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    Simultanéité
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    Concurrency
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    BasicLockable (C++11)
    Lockable (C++11)
    TimedLockable (C++11)
    Mutex (C++11)
    TimedMutex (C++11)
    Autre
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    Other
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    Indique qu'une instance du type peut être construit par défaut.

    Exigences

    Le type doit implémenter les fonctions suivantes:
    Original:
    The type must implement the following functions:
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    Type::Type

    <tbody> </tbody>
    Type::Type();

    constructeur par défaut: construit une instance du type avec un contenu par défaut.

    Les expressions suivantes doivent avoir les effets appropriés:

    Expression
    Original:
    Expression
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    		 Effects
    Type a1;
    a1 est initialisée par défaut.
    Original:
    a1 is default-initialized.
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    Type a2{};
    a2 est initialisé par valeur .
    Original:
    a2 is value-initialized.
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    Type{}
    Type()
    un objet temporaire de type Type est initialisé par valeur.
    Original:
    a temporary object of type Type is value-initialized.
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    Voir aussi

    (C++11)
    (C++11)
    (C++11)
    vérifie si un type a un constructeur par défaut
    Original:
    checks if a type has a default constructor
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    (classe générique) [edit]