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    std::unordered_set::count

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    C++
     
    Bibliothèque de conteneurs
     
    std :: unordered_set
    Les fonctions membres
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    Member functions
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    unordered_set::unordered_set
    unordered_set::~unordered_set
    unordered_set::operator=
    unordered_set::get_allocator
    Les itérateurs
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    Iterators
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    unordered_set::begin
    unordered_set::cbegin
    unordered_set::end
    unordered_set::cend
    Capacité
    Original:
    Capacity
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    unordered_set::erase
    unordered_set::size
    unordered_set::max_size
    Modificateurs
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    Modifiers
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    unordered_set::clear
    unordered_set::insert
    unordered_set::emplace
    unordered_set::emplace_hint
    unordered_set::erase
    unordered_set::swap
    Lookup
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    Lookup
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    unordered_set::count
    unordered_set::find
    unordered_set::equal_range
    Interface seau
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    Bucket interface
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    unordered_set::begin2
    unordered_set::end2
    unordered_set::bucket_count
    unordered_set::max_bucket_count
    unordered_set::bucket_size
    unordered_set::bucket
    Politique de hachage
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    Hash policy
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    unordered_set::load_factor
    unordered_set::max_load_factor
    unordered_set::rehash
    unordered_set::reserve
    Des observateurs
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    Observers
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    unordered_set::hash_function
    unordered_set::key_eq
     
    <tbody> </tbody>
    size_type count( const Key& key ) const;

    Retourne le nombre d'éléments avec la clé key.

    Paramètres

    key - valeur de la clé des éléments à compter

    Valeur de retour

    Nombre d'éléments avec la clé key

    Complexité

    Amortized constant on average, worst case linear in the size of the container.

    Voir aussi
    trouve l'élément avec la clé spécifique
    Original:
    finds element with specific key
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    (fonction membre publique) [edit]
    rendements varient d'éléments correspondant à une clé spécifique
    Original:
    returns range of elements matching a specific key
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    (fonction membre publique) [edit]