std::generate
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| Déclaré dans l'en-tête <algorithm>
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| template< class ForwardIt, class Generator > void generate( ForwardIt first, ForwardIt last, Generator g ); |
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Attribue à chaque élément dans la plage
[first, last) une valeur générée par l'objet de fonction donnée g . Original:
Assigns each element in range
[first, last) a value generated by the given function object g. The text has been machine-translated via Google Translate.
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Sommaire |
[modifier] Paramètres
| first, last | - | l'ensemble d'éléments à générer
Original: the range of elements to generate The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. | ||||||
| g | - | generator function object that will be called. The signature of the function should be equivalent to the following:
The type Ret must be such that an object of type ForwardIt can be dereferenced and assigned a value of type Ret. | ||||||
| Type requirements | ||||||||
-ForwardIt must meet the requirements of ForwardIterator.
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[modifier] Retourne la valeur
(Aucun)
Original:
(none)
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[modifier] Complexité
Exactement std::distance(first, last) invocations de
g() et les affectations .Original:
Exactly std::distance(first, last) invocations of
g() and assignments.The text has been machine-translated via Google Translate.
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[modifier] Mise en œuvre possible
template<class ForwardIt, class Generator> void generate(ForwardIt first, ForwardIt last, Generator g) { while (first != last) { *first++ = g(); } } |
[modifier] Exemple
Les usages code suivant remplit un vecteur de nombres aléatoires:
Original:
The following code uses fills a vector with random numbers:
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#include <algorithm> #include <iostream> #include <cstdlib> int main() { std::vector<int> v(5); std::generate(v.begin(), v.end(), std::rand); // Using the C function rand() std::cout << "v: "; for (auto iv: v) { std::cout << iv << " "; } std::cout << "\n"; }
Résultat :
v: 52894 15984720 41513563 41346135 51451456
[modifier] Voir aussi
| attribue un ensemble d'éléments d'une certaine valeur Original: assigns a range of elements a certain value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction générique) | |
| enregistre le résultat de l'application de N d'une fonction Original: saves the result of N applications of a function The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction générique) | |
