[ Web Proxy ]
URL:
Viewing: https://fr.cppreference.com/cpp/iterator/begin [Back]  [Original]
std::begin cppreference.com
cppreference.com
Espaces de noms
Variantes

    std::begin

    De cppreference.com
    []

    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++
     
    Bibliothque Iterator
    Primitives Iterator
    Original:
    Iterator primitives
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    iterator_traits
    input_iterator_tag
    output_iterator_tag
    forward_iterator_tag
    bidirectional_iterator_tag
    random_access_iterator_tag
    iterator
    Adaptateurs Iterator
    Original:
    Iterator adaptors
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    reverse_iterator
    Itrateurs de flux
    Original:
    Stream iterators
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    istream_iterator
    ostream_iterator
    istreambuf_iterator
    ostreambuf_iterator
    Oprations Iterator
    Original:
    Iterator operations
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    advance
    distance
    prev (C++11)
    next (C++11)
    Gamme d'accs
    Original:
    Range access
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    begin (C++11)
    end (C++11)
     
    <tbody> </tbody>
    Dclar dans l'en-tte <iterator>
    template< class C > auto begin( C& c ) -> decltype(c.begin());
    		 (1) (depuis C++11)
    template< class C > auto begin( const C& c ) -> decltype(c.begin());
    		 (2) (depuis C++11)
    template< class T, size_t N > T* begin( T (&array)[N] );
    		 (3) (depuis C++11)
    Retourne un itrateur au dbut de l'c conteneur donn ou un tableau array .
    Original:
    Returns an iterator to the beginning of the given container c or array array.
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    Paramtres

    c -
    un rcipient avec un procd begin
    Original:
    a container with a begin method
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    array -
    un tableau de type arbitraire
    Original:
    an array of arbitrary type
    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

    un itrateur au dbut de c ou array
    Original:
    an iterator to the beginning of c or array
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    Notes

    En plus d'tre inclus dans <iterator>, std::begin est assur de devenir disponibles si l'un des en-ttes suivants sont inclus: <array>, <deque>, <forward_list>, <list>, <map>, <regex>, <set>, <string>, <unordered_map>, <unordered_set> et <vector> .
    Original:
    In addition to being included in <iterator>, std::begin is guaranteed to become available if any of the following headers are included: <array>, <deque>, <forward_list>, <list>, <map>, <regex>, <set>, <string>, <unordered_map>, <unordered_set>, and <vector>.
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    Spcialisations

    Spcialisations personnaliss de std::begin peut tre fourni pour les classes qui n'exposent pas une fonction membre begin() appropri, mais peut tre itre. Les spcialisations suivantes sont dj fournis par la bibliothque standard:
    Original:
    Custom specializations of std::begin may be provided for classes that do not expose a suitable begin() member function, yet can be iterated. The following specializations are already provided by the standard library:
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    (C++11)
    std::begin spcialise
    Original:
    specializes std::begin
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    (fonction gnrique) [edit]
    (C++11)
    std::begin spcialise
    Original:
    specializes std::begin
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    (fonction gnrique) [edit]

    Exemple

    #include <iostream>
#include <vector>
#include <iterator>

int main() 
{
    std::vector<int> v = { 3, 1, 4 };
    auto vi = std::begin(v);
    std::cout << *vi << '\n'; 

    int a[] = { -5, 10, 15 };
    auto ai = std::begin(a);
    std::cout << *ai << '\n';
}

    Rsultat : 

    3
-5

    Voir aussi

    (C++11)
    retourne un itrateur l'extrmit d'un conteneur ou d'un tableau
    Original:
    returns an iterator to the end of a container or array
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    (fonction) [edit]
    Web Proxy Viewer  |  New URL  |  Original Page