How to use $ in UDTs...

[Don Clugston]

Oskar Linde wrote:
> Bill Baxter wrote:
> 
>> Anyway, f[i][j][k] syntax is much more difficult to read than 
>> f[i,j,k].  So I think the latter is what we should be shooting for.
> 
> I agree, and for what it is worth it is possible to implement 
> multidimensional indexing and slicing for UDTs today. The only thing 
> lacking is the ability to use the .. and $ tokens. For example:
> 
> f[i, all, all, j, all, end-1, all, range(1, end)]
> 
> gets translated into quite optimal code. The only variables that get 
> passed to the indexing function is (i,j,1,1) and no temporaries need to 
> be created. I guess that with some additional compiler supported 
> sugaring, the above could become something like:
> 
> f[i, .. , .. , j, .. , $-1, .. , 1..$]

Try putting this line at the top of your file.

enum : uint { __dollar = int.max }

Of course you have to add (length-int.max) to any indices you get, for any index 
 > (int.max-length).

Gotta love these easter eggs....