gistfile1.cpp

// C++
// ref. https://gist.github.com/817504

#include <algorithm>
#include <iterator>
#include <vector>

using namespace std;

class counter {
public:
    typedef int result_type;
    counter(int start) : n(start) {}
    result_type operator()() { return n++; }
private:
    result_type n;
};

vector<int> f()
{
    vector<int> v;
    generate_n(back_inserter(v), 4, counter(1));
    v.resize(distance(v.begin(),
		      remove_if(v.begin(), v.end(),
				bind2nd(modulus<int>(), 2))));
    return v;
}