Espaces de noms
Variantes

    std::map::operator[]

    De cppreference.com
    See More

    This page has been machine-translated from the English version of the wiki using Google Translate.

    The translation may contain errors and awkward wording. Hover over text to see the original version. You can help to fix errors and improve the translation. For instructions click here.

    Click here for the English version of this page

    <metanoindex/>

    This page has been machine-translated from the English version of the wiki using Google Translate.

    The translation may contain errors and awkward wording. Hover over text to see the original version. You can help to fix errors and improve the translation. For instructions click here.

    Click here for the English version of this page

    <metanoindex/>

     
    C++
     
    Bibliothèque de conteneurs
     
    std::map
    Les fonctions membres
    Original:
    Member functions
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    map::map
    map::~map
    map::operator=
    map::get_allocator
    Elément d'accès
    Original:
    Element access
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    map::at
    map::operator[]
    Les itérateurs
    Original:
    Iterators
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    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
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    map::empty
    map::size
    map::max_size
    Modificateurs
    Original:
    Modifiers
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    map::clear
    map::insert
    map::emplace (C++11)
    map::emplace_hint (C++11)
    map::erase
    map::swap
    Lookup
    Original:
    Lookup
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    map::count
    map::find
    map::equal_range
    map::lower_bound
    map::upper_bound
    Des observateurs
    Original:
    Observers
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    map::key_comp
    map::value_comp
     
    <tbody> </tbody>
    T& operator[]( const Key& key );
    		 (1)
    T& operator[]( Key&& key );
    		 (2) (depuis C++11)
    Insère un nouvel élément dans le récipient à l'aide key comme la clé par défaut et la valeur construite mappé et renvoie une référence à la valeur nouvellement construit mappé. Si un élément de key clé existe déjà, aucune insertion est effectuée et une référence à sa valeur mappée est retourné .
    Original:
    Inserts a new element to the container using key as the key and default constructed mapped value and returns a reference to the newly constructed mapped value. If an element with key key already exists, no insertion is performed and a reference to its mapped value is returned.
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    1)

    Effectue essentiellement (insert(std::make_pair(key, T())).first)->second .
    Original:
    Essentially performs (insert(std::make_pair(key, T())).first)->second.
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    2)

    Effectue essentiellement (insert(std::make_pair(std::move(key), T())).first)->second .
    Original:
    Essentially performs (insert(std::make_pair(std::move(key), T())).first)->second.
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    No iterators or references are invalidated.

    Paramètres

    key -
    la clé de l'élément à trouver
    Original:
    the key of the element to find
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    Retourne la valeur

    Référence à la valeur de l'élément mappé nouveau si aucun élément avec la clé key existé. Sinon une référence à la valeur associée de l'élément actuel est retourné .
    Original:
    Reference to the mapped value of the new element if no element with key key existed. Otherwise a reference to the mapped value of the existing element is returned.
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    Complexité

    Logarithmic in the size of the container.

    Exemple

    This section is incomplete
    Reason: no example

    Voir aussi

    (C++11)
    		 accède à l'élément spécifié avec vérification de bornes
    (fonction membre publique) [edit]