◐ Shell
clean mode source ↗

std::list::back — cppreference.com

De cppreference.com

<metanoindex/>

<tbody> </tbody>

reference back();

const_reference back() const;

Retourne référence au dernier élément dans le conteneur .

Original:

Returns reference to the last element in the container.

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Appel back sur un contenant vide est indéfini .

Original:

Calling back on an empty container is undefined.

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Paramètres

(Aucun)

Original:

(none)

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 au dernier élément

Original:

reference to the last element

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Complexité

Constante

Original:

Constant

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Notes

Pour une c conteneur, le return c.back(); expression est équivalente à { auto tmp = c.end(); --tmp; return *tmp; }

Original:

For a container c, the expression return c.back(); is equivalent to { auto tmp = c.end(); --tmp; return *tmp; }

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Exemple

Le code suivant utilise back pour afficher le dernier élément d'une std::list<char>:

Original:

The following code uses back to display the last element of a std::list<char>:

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

#include <list>
#include <iostream>
 
int main()
{
    std::list<char> letters {'o', 'm', 'g', 'w', 't', 'f'};
 
    if (!letters.empty()) {
        std::cout << "The last character is: " << letters.back() << '\n';
    }  
}

Résultat :

Voir aussi

accède au premier élément
(fonction membre publique) [edit]