Simon TRENY, el 29 de marzo a las 16:33 me escribiste:
> Hello,
>
> I have a class "A" and I'd like to keep a list of all the created
> instances of this class. To do that, I have a static List!(A) in the
> A class and, in the constructor, I add each new instance to this list.
> This gives me the following code:
>
> class A {
> private static List!(A) s_instances;
>
> public this() {
> s_instances.add(this);
> }
>
> public ~this() {
> s_instances.remove(this);
> }
>
> public static void printAll() {
> foreach (A instance; s_instances)
> print(instance.toString());
> }
> }
>
> But then, since all the instances are referenced by the static list,
> they are never garbage-collected, which could be a problem. In some
> other languages, this can be solved using weak references, but I haven't
> found any informations about using weak references in D. Is there any
> way to solve this problem?
This was discussed several times in the past. For example:
http://www.digitalmars.com/d/archives/digitalmars/D/learn/weak_references_13301.html
http://www.digitalmars.com/d/archives/digitalmars/D/learn/Soft_weak_references_8264.html
http://www.digitalmars.com/d/archives/digitalmars/D/announce/ANN_WeakObjectReference_-_class_to_hold_weak_references_9103.html
etc.
I hope it helps.
--
Leandro Lucarella (luca) | Blog colectivo: http://www.mazziblog.com.ar/blog/
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