Proposal : allocations made easier with non nullable types.

[Andrei Alexandrescu]

Nick Sabalausky wrote:
> "Daniel Keep" <daniel.keep.lists at gmail.com> wrote in message 
> news:gmpd71$8uj$1 at digitalmars.com...
>> Alex Burton wrote:
>>> I think it makes no sense to have nullable pointers in a high level 
>>> language like D.
>> Oh, and how do you intend to make linked lists?  Or trees?  Or any
>> non-trivial data structure?
>>
> 
> Null Object Pattern:
> --------------
> class LinkedListNode(T)
> {
>     LinkedListNode!(T) next;
> 
>     private static LinkedListNode!(T) _end;
>     static LinkedListNode!(T) end() {
>         return _end;
>     }
>     static this() {
>          _end = new LinkedListNode!(T);
>     }
> }
> --------------


What is "next" for the _end node?

Andrei