Re: Pointer Pointing Itself

pete wrote:
wade@xxxxxxxxxx wrote:
KBG wrote:
where could [a pointer pointing at itself] be this used ?

char* a = 0; /* no string */
char* b = ""; /* empty string */
void* c = 0; /* no list */
void* d = &d; /* empty list */

I consider a null pointer to be an empty list,
that is to say, a list with zero number of nodes.
I don't see any point in distinguishing "empty list" from "no list".

I don't think "d" is an empty list, I think it is a cyclic list of no
values. In OCaml, the equivalent is:

type t = Nil | Cons of t

--
Dr Jon D Harrop, Flying Frog Consultancy
Objective CAML for Scientists
http://www.ffconsultancy.com/products/ocaml_for_scientists
.

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