std::generate
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| Elemento definito nell'header <algorithm>
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| template< class ForwardIt, class Generator > void generate( ForwardIt first, ForwardIt last, Generator g ); |
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Assegna ogni elemento nella gamma
[first, last) un valore generato dall'oggetto funzione data 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.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
Indice |
[modifica] Parametri
| first, last | - | l'intervallo di elementi da generare
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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[modifica] Valore di ritorno
(Nessuno)
Original:
(none)
The text has been machine-translated via Google Translate.
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[modifica] Complessità
Esattamente std::distance(first, last) invocazioni di
g() e le assegnazioni.Original:
Exactly std::distance(first, last) invocations of
g() and assignments.The text has been machine-translated via Google Translate.
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You can help to correct and verify the translation. Click here for instructions.
[modifica] Possibile implementazione
template<class ForwardIt, class Generator> void generate(ForwardIt first, ForwardIt last, Generator g) { while (first != last) { *first++ = g(); } } |
[modifica] Esempio
Gli usi codice seguente riempie un vettore con numeri casuali:
Original:
The following code uses fills a vector with random numbers:
The text has been machine-translated via Google Translate.
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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"; }
Output:
v: 52894 15984720 41513563 41346135 51451456
[modifica] Vedi anche
| assegna un intervallo di elementi di un certo valore 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. (funzione di modello) | |
| salva il risultato di applicazioni N di una funzione 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. (funzione di modello) | |
