On 10/21/2014 05:22 AM, edn wrote:> Could someone provide me with
examples showing the usefulness of
> pointers in the D language? They don't seem to be used as much as in C
> and C++.
A pointer is the only sensible option for the following:
- References to any local data because 'ref' is only for parameters and
return types.
int a;
int b;
int* r = (condition ? &a : &b); // r must be a pointer
*r = 42;
- Any link in a linked data structure like linked lists and trees:
struct L
{
L* next; // must be a pointer
}
One can use classes and slices for references as well but they are more
expensive.
Ali
