Construction a vector from the concatenation of 2 vectors

Question

Is there a way to construct a vector as the concatenation of 2 vectors (Other than creating a helper function?)

For example:

Answer 1

class Vector : public vector
{
public:
    Vector operator+(const Vector& vec);
};

Vector Vector::operator+(const Vector& vec)
{
    for (int i = 0; i < vec.size(); i++)
    {
        this->push_back(vec[i]);
    }

    return *this;
}