How to get the address of the std::vector buffer start most elegantly?

Question

I want to use std::vector for dynamically allocating memory. The scenario is:

int neededLength = computeLength(); // some logic here

// this will allocate t         


        

Answer 1

As already said, no.

The reason is that &buffer[0] is the only way guarantied by the standard to get the adresse of the vector buffer.