Hi Yan Li ---
What you are asking for can be done with existential types or wildcards.
However you can circumvent this problem by defining an appropriate class.
class Finish[T] {
var x:T;
public this(t:T) { x=t;} // replacement for startFinish
public stopFinish():T {
return x;
}
}
So now for every finish of type T you would write:
var finish = new Finish[T](r);
....
val t = finish.stopFinish();
Yan CRL Li wrote:
> My problem is : I want to share a variable of generic class T between two
> static functions:
>
> Pseudo Code :
>
> var X:T;
>
> Function A:
> public static def startFinishExpr[T] (r:T): Void {
> // set X = r.
> }
>
> Function B:
> public static def stopFinishExpr[T]():T {):
> // get X;
> return X;;
> }
>
> Both of these two functions need to acces one variable named X which is of
> generic class.
>
> I know how to do this if it is not generic class. I can create another
> final static class B whose member is X. Then I can new one instance of this
> class B and modify X through set and get method. However, this not work if
> it is generic. As I can not new one instance of class B if I do not know
> its type T. I only know what T is when function A is called.
>
> Can anyone give some suggestions?
>
> Thanks in advance.
>
> Li Yan (李严)
>
> System Group, IBM China Research Lab
> Tel: 8610-58748060
> Tieline: 11905-8060
> Add: Building 19 Zhongguancun Software Park, 8 Dongbeiwang WestRoad,
> Haidian District, Beijing, 100094, P.R.China
> E-mail: liyan...@cn.ibm.com
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