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deque::assign

 

Erases elements from a deque and copies a new set of elements to the target deque.

template<class InputIterator>
    void assign(
    InputIterator First,
    InputIterator Last);
void assign(
    size_type Count,
    const Type& Val
);
void assign(
    initializer_list<Type> IList
);

First

Position of the first element in the range of elements to be copied from the argument deque.

Last

Position of the first element beyond the range of elements to be copied from the argument deque.

Count

The number of copies of an element being inserted into the deque.

Val

The value of the element being inserted into the deque.

IList

The initializer_list being inserted into the deque.

After any existing elements in the target deque are erased, assign either inserts a specified range of elements from the original deque or from some other deque into the target deque, or inserts copies of a new element of a specified value into the target deque.

Example

// deque_assign.cpp
// compile with: /EHsc
#include <deque>
#include <iostream>
#include <initializer_list>

int main()
{
    using namespace std;
    deque <int> c1, c2;
    deque <int>::const_iterator cIter;

    c1.push_back(10);
    c1.push_back(20);
    c1.push_back(30);
    c2.push_back(40);
    c2.push_back(50);
    c2.push_back(60);

    deque<int> d1{ 1, 2, 3, 4 };
    initializer_list<int> iList{ 5, 6, 7, 8 };
    d1.assign(iList);

    cout << "d1 = ";
    for (int i : d1)
        cout << i;
    cout << endl;

    cout << "c1 =";
    for (int i : c1)
        cout << i;
    cout << endl;

    c1.assign(++c2.begin(), c2.end());
    cout << "c1 =";
    for (int i : c1)
        cout << i;
    cout << endl;

    c1.assign(7, 4);
    cout << "c1 =";
    for (int i : c1)
        cout << i;
    cout << endl;

}

d1 = 5678c1 =102030c1 =5060c1 =4444444

Requirements

Header: <deque>

Namespace: std

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