std::advance

 

C++

Linguaggio

Concetti

Libreria di Utilità

Stringhe

Contenitori

Algoritmi

Iteratori

Libreria matematca

Input/output

Localizzazione

Espressioni regolari(C++11)

Operazioni atomicche(C++11)

Multithreading(C++11)

 

Biblioteca Iterator

Primitive iteratori 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
Adattatori iteratori 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
move_iterator (C++11) back_insert_iterator front_insert_iterator insert_iterator	make_move_iterator (C++11) back_inserter front_inserter inserter
Flusso iteratori 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
Operazioni di iteratori 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)
Intervallo accesso 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)

 

Elemento definito nell'header <iterator>
template<class InputIt, class Distance > void advance( InputIt& it, Distance n );

Incrementa dato iteratore it dal n elementi.

Original:

Increments given iterator it by n elements.

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Se n è negativo, l'iteratore viene decrementato. In questo caso, InputIt deve soddisfare i requisiti di BidirectionalIterator, altrimenti il ​​comportamento è indefinito.

Original:

If n is negative, the iterator is decremented. In this case, InputIt must meet the requirements of BidirectionalIterator, otherwise the behavior is undefined.

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Parametri

it	-	iteratore da anticipare Original: iterator to be advanced The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
n	-	numero di elementi it dovrebbe essere avanzato Original: number of elements it should be advanced The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
Type requirements
- InputIt must meet the requirements of InputIterator.

Valore di ritorno

(Nessuno)

Original:

(none)

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Complessità

Lineare.

Original:

Linear.

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Tuttavia, se InputIt soddisfa inoltre i requisiti di RandomAccessIterator, complessità è costante.

Original:

However, if InputIt additionally meets the requirements of RandomAccessIterator, complexity is constant.

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Esempio

#include <iostream>#include <iterator>#include <vector>   int main(){std::vector<int> v{3, 1, 4};   auto vi = v.begin();   std::advance(vi, 2);   std::cout<<*vi <<'\n';}

Output:

4

Vedi anche

distance	restituisce la distanza tra due iteratori Original: returns the distance between two iterators The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (funzione)