How to fill a vector with non-trivial initial values?

Question

I know how to fill an std::vector with non-trivial initial values, e.g. sequence numbers:

void IndexArray( unsigned int length, std::vector&a         


        

Answer 1

If you're using SGI STL (or a derivative, such as STLPort), you can use iota. :-)

void IndexArray(unsigned int length, vector& v)
{
    vector(length).swap(v);
    iota(v.begin(), v.end(), 0);
}