std::deque::back — cppreference.com
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Retourne référence au dernier élément dans le conteneur .
Original:
Returns reference to the last element in the container.
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Appel back sur un contenant vide est indéfini .
Original:
Calling back on an empty container is undefined.
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Paramètres
(Aucun)
Original:
(none)
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Retourne la valeur
référence au dernier élément
Original:
reference to the last element
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Complexité
Constante
Original:
Constant
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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; }
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Exemple
Le code suivant utilise back pour afficher le dernier élément d'une std::deque<char>:
Original:
The following code uses back to display the last element of a std::deque<char>:
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#include <deque> #include <iostream> int main() { std::deque<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] | |