Question on class templates

anonymous anonymous at example.com
Fri Jun 7 11:06:25 PDT 2013


On Friday, 7 June 2013 at 17:52:48 UTC, Eric wrote:
>
> interface Identity(V, K)
> {
> }
>
> class X(V, K) : Identity!(V, K)
> {
>     private K k;
>
>     public this(K k) { this.k = k; }
> }
>
> void main()
> {
>     auto x = new X!(X, double)(6.0);
> }
>
> Hi -
>
> I have the code above, but the line in main() gives the 
> following compile error:
> Error: template instance X!(X, double) does not match template 
> declaration X(V, K)
>
> If I change the template parameter X to something else, like 
> string, it compiles fine.  But I want the Identity interface to 
> know the type of the implementing class.  Is that possible?
>
> Thanks,
>
> Eric

class X(K) : Identity!(X, K)

     auto x = new X!(double)(6.0);


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