example of pointer usefulness in D

[Chris Williams via Digitalmars-d]

On Tuesday, 21 October 2014 at 19:36:50 UTC, Ola Fosheim Grøstad 
wrote:
> On Tuesday, 21 October 2014 at 19:33:14 UTC, Freddy wrote:
>> On Tuesday, 21 October 2014 at 12:22:54 UTC, 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++.
>>
>> https://en.wikipedia.org/wiki/XOR_linked_list
>
> Uhm. That won't work with the GC…

It won't work with the GC, but one could still safely implement 
an XOR linked list in D, if they used malloc/free manually, so 
that the collector was never aware of the existence of those 
allocations.

As to the OP, at the moment, D doesn't support structs as a 
reference type so if you want a container that stores references 
to structs rather than copies, the container will probably use 
pointers.