How do I convert vector of strings into vector of integers in C++?

Question

I have a vector of strings. Need help figuring out how to convert it into vector of integers in order to be able to work with it arithmetically. Thanks!

#include         


        

Answer 1

What about:

#include 
#include 

template
void castContainer(const C1& source, C2& destination)
{
    typedef typename C1::value_type source_type;
    typedef typename C2::value_type destination_type;
    destination.resize(source.size());
    std::transform(source.begin(), source.end(), destination.begin(), boost::lexical_cast);
}

It can convert vector into vector, and also other container into container2, e.g.: list -> list.

Full code:

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

template
void castContainer(const C1& source, C2& destination)
{
    typedef typename C1::value_type source_type;
    typedef typename C2::value_type destination_type;
    destination.resize(source.size());
    std::transform(source.begin(), source.end(), destination.begin(), boost::lexical_cast);
}

template
std::vector& operator<<(std::vector& v, T2 t)
{
    v.push_back(T(t));
    return v;
}

main(int argc, char *argv[])
{   
    std::vector v1;
    v1 << "11" << "22" << "33" << "44";
    std::cout << "vector: ";
    std::copy(v1.begin(), v1.end(), std::ostream_iterator(std::cout, ", "));
    std::cout << std::endl;

    std::vector v2;
    castContainer(v1, v2);

    std::cout << "vector: ";
    std::copy(v2.begin(), v2.end(), std::ostream_iterator(std::cout, ", "));
    std::cout << std::endl;
}