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

but this &(buffer[0]) looks ugly

It’s the normal way. You can omit the parentheses, though:

&buffer[0]