Ignoring the Voices: C++11 Example - Lambda Capture Lists

lambda_capture_list.cpp

#include <algorithm>
#include <iostream>
#include <vector>

using namespace std;

void PrintList(const vector<int>& list)
{
    for (auto i : list)
    {
        cout << i << " ";
    }
    cout << endl;
}

int main(int argc, char** argv)
{
    vector<int> myList = { 4, 1, 6, 2, 13 };
    PrintList(myList);
    
    int stepCount = 0;
    
    sort(myList.begin(), myList.end(), [&](int x, int y) -> bool { ++stepCount; return x < y; });
    PrintList(myList);
    
    cout << "List was sorted in " << stepCount << " step(s)" << endl;
}

Compiled as follows with GCC 4.6.1 on Ubuntu 11.10

g++ -Wall -Werror -std=c++0x -o lambda_capture_list lambda_capture_lists.cpp