Re: Using a back_inserter with a deque.

Hello everyone.

I'm having trouble using a back_inserter with a deque. The following

code snippet illustrates my issue:

#include <deque>

#include <vector>

#include <iterator>

#include <sstream>

#include <iostream>

#include "Indent.hpp"

using namespace std;

int main()

{

    istringstream iss("Sample string to be split.");

    vector<string> vec;

    copy(istream_iterator<string>(iss),

         istream_iterator<string>(),

         back_inserter<vector<string> >(vec));

    

    deque<string> dec;

    copy(istream_iterator<string>(iss),

         istream_iterator<string>(),

         back_inserter<deque<string> >(dec));

    

    cout << "vector result " << "(" <<vec.size() << "): " ;

    for (string s : vec)

        cout << s << " ";

    cout << "\ndeque result (" << dec.size() << "): " ;

    for (string s : dec)

        cout << s << " ";

    cout<<endl;

}

This results in the following output:

   vector result (5): Sample string to be split.

   deque result (0):

The vector result being what I expect. I don't understand why the deque

is empty. Could someone explain to me the problem? Is there a way to

do what I am trying to do using a deque?