Concatenating two std::vectors

Question

How do I concatenate two std::vectors?

Answer 1

You can do it with pre-implemented STL algorithms using a template for a polymorphic type use.

#include 
#include 
#include 

template

void concat(std::vector& valuesa, std::vector& valuesb){

     for_each(valuesb.begin(), valuesb.end(), [&](int value){ valuesa.push_back(value);});
}

int main()
{
    std::vector values_p={1,2,3,4,5};
    std::vector values_s={6,7};

   concat(values_p, values_s);

    for(auto& it : values_p){

        std::cout<

You can clear the second vector if you don't want to use it further (clear() method).