[tutorial] more stl-ish map()

#include <algorithm>
#include <iostream>
#include <vector>
#include <iomanip>
#include <functional>
#include <iterator>
#include <list>

template<typename RET_CONT, typename IT, typename OPERATION>
RET_CONT map(IT begin, IT end, OPERATION op)
{
   RET_CONT ret;
   std::transform(begin, end, back_inserter(ret), op);
   return ret;
}

int main()
{
    auto println = [](const char *message) { std::cout << "\n" << message << '\n'; };
    std::vector<int> col{ 23, 23, 37, 42, 23, 23, 37 };
    typedef std::vector<double> astype;

    auto func = [] (auto i) {
        return i * 10.0;
    };
    astype out = map<astype>(col.begin(), col.end(), func);
    std::copy(out.begin(), out.end(), std::ostream_iterator<decltype(out.at(0))>(std::cout, " "));

    return 0;
}