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std::vector::assign - cppreference.com

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void assign( size_type count, const T& value );

 (1)

template< class InputIt > void assign( InputIt first, InputIt last );

 (2)

Sostituisce il contenuto del contenitore.

Original:

Replaces the contents of the container.

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1)

sostituisce il contenuto con le copie di count value valore

Original:

replaces the contents with count copies of value value

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2)

sostituisce il contenuto con le copie di quelli del [first, last) gamma

Original:

replaces the contents with copies of those in the range [first, last)

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Parametri

count -

la nuova dimensione del contenitore

Original:

the new size of the container

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value -

il valore per inizializzare elementi del contenitore

Original:

the value to initialize elements of the container with

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first, last -

l'intervallo per copiare gli elementi da

Original:

the range to copy the elements from

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Type requirements
-InputIt must meet the requirements of InputIterator.

Complessità

1)

lineare in count

Original:

linear in count

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2)

lineare di distanza tra first e last

Original:

linear in distance between first and last

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Esempio

Il codice seguente utilizza assign per aggiungere diversi personaggi a un std::vector<char>:

Original:

The following code uses assign to add several characters to a std::vector<char>:

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#include <vector>
#include <iostream>
 
int main()
{
    std::vector<char> characters;
 
    characters.assign(5, 'a');

    for (char c : characters) {
        std::cout << c << '\n';
    } 

    return 0;
}

Output:

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