Q about template function overloads

[Bill Baxter]

Bill Baxter wrote:

> Also how do I write the equivalent of this:
> 
>     static if( is( T S: S[]) ) {
>         alias Array!(S)  _ArrayTForT;
>     }
> 
> For the case where T is a user-defined array type:
>     /// doesn't work!
>     static if( is( T S: Array!(S)) ) {
>         alias Array!(S)  _ArrayTForT;
>     }
> It really shouldn't just be an "else" catch-all in the code above.  It 
> should be checking for an instantiation of Array!().

This second part of my question seems to be a result of bug 688[1]. 
That is, the check 'is(T S:Array!(S))' *does* work if Array is a struct, 
just not if it's a class.

But I would still be interested in any suggestions for how to do the 
overloading in a more elegant way.

[1] http://d.puremagic.com/issues/show_bug.cgi?id=688

--bb