C++ extend a vector (with another vector)

Question

I'm a C/Python programmer in C++ land, really working with the STL for the first time. In Python, extending a list with another list uses the list's extend method:

>>> v = [1, 2, 3]
>>> v_prime = [4, 5, 6]
>>> v.extend(v_prime)
>>> print v
[1, 2, 3, 4, 5, 6]

In C++, I'm currently using this algorithmic approach for vector extension:

v.resize(v.size() + v_prime.size());
copy(v_prime.begin(), v_prime.end(), v.rbegin());

I just want to find out if this was the canonical way of doing vector extension or if there is a simpler way that I'm missing.

Answer 1

From here

// reserve() is optional - just to improve performance
v.reserve(v.size() + distance(v_prime.begin(),v_prime.end()));
v.insert(v.end(),v_prime.begin(),v_prime.end());

Answer 2

copy(v_prime.begin(), v_prime.end(), back_inserter(v));

Answer 3

i could be wrong but you might try "vectorC = vectorA + vectorB". I know this works with stl strings and i'm to lazy to try it/check it works with vectors but hey try it and sorry if it doesn't