Convert vector to vector ( elegant way )

Question

I would like to know if there is an elegant way or a built-in function to convert vector to vector. What I\'ve done is simp

Answer 1

In general, if you have a container of T and want to create a container of U from the container of T, as others have mentioned the algorithm to look for is std::transform.

If you are not using C++ 11, Here is std::transform usage:

#include 
#include 
#include 
#include 
#include 
#include 

std::string Transformer(double d)
{
    std::ostringstream doubleStr;
    doubleStr << d;
    return doubleStr.str();
}

int main()
{
    std::vector doubleVec;
    doubleVec.push_back(1.0);
    doubleVec.push_back(2.1);
    doubleVec.push_back(3.2);

    std::vector doubleStr;
    std::transform(doubleVec.begin(), doubleVec.end(), std::back_inserter(doubleStr), Transformer);
    std::copy(doubleStr.begin(), doubleStr.end(), std::ostream_iterator(std::cout, "  "));
}

Output: 1 2.1 3.2