On Tue, Mar 15, 2022 at 4:41 PM Thomas Bushnell BSG
<tbushn...@google.com> wrote:
> Not in the normal implementation it doesn't. Typically it might be:
>
> type element struct {
> value int
> next *element
> }
>
> next is a pointer to an element, not a pointer to a pointer. That element
> contains within it a pointer, but next is not a pointer to a pointer. If it
> were, it would be declared with two stars.
Although linked lists usually do contain a payload, as you note, I
consider `type peano *peano` a payload-less linked list. Or a linked
list with zero sized payload one could also say. And once a node
contains zero bits of a payload, it contains only the link field. And
a struct with a single field is another interesting case that can be
abstracted out. Numbers 0 and 1 make many things much more interesting
;-)
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