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    std::map::count

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    C++
     
    Bibliothèque de conteneurs
     
    std::map
    Les fonctions membres
    Original:
    Member functions
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    map::map
    map::~map
    map::operator=
    map::get_allocator
    Elément d'accès
    Original:
    Element access
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    map::at
    map::operator[]
    Les itérateurs
    Original:
    Iterators
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    map::begin
    map::cbegin
    (C++11)
    map::end
    map::cend
    (C++11)
    map::rbegin
    map::crbegin
    (C++11)
    map::rend
    map::crend
    (C++11)
    Capacité
    Original:
    Capacity
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    map::empty
    map::size
    map::max_size
    Modificateurs
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    Modifiers
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    map::clear
    map::insert
    map::emplace (C++11)
    map::emplace_hint (C++11)
    map::erase
    map::swap
    Lookup
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    Lookup
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    map::count
    map::find
    map::equal_range
    map::lower_bound
    map::upper_bound
    Des observateurs
    Original:
    Observers
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    map::key_comp
    map::value_comp
     
    <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

    Logarithmic in the size of the container plus linear in the number of the elements found.

    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]