Hi,
> The actual argument(s) must be compile-time "params". In your example,
> 'i' would need to be a "param", not "var".
>
> Note that "rank" is usually a param, so you should be able to write:
>
> var A: [...] ...; // A is an array
> compilerError("Error: rank=" + A.rank);
Thanks for reminding me about that, though the actual situation is a bit more
complicated than this, see below.
> A slight variation on your class declaration:
>
> class MyBlockDist {
> type policyType;
> var policy:policyType;
> ....
> }
>
> would be avoiding 'policyType' and having 'policy' be a generic field:
>
> class MyBlockDist {
> var policy;
> ....
> }
Hm, I think I tried that but ran into some kind of problems. Well, I'll give it
another go and ask further quesitons if I can't make it work...
> In some cases you won't be able to mix instances different
> instantiations of MyBlockDist. This may or may not be an issue for you.
> If it is, make the 'policy' field be non-generic, its type being the
> root of your policy-type class hierarchy:
>
> class MyBlockDist {
> var policy:RootPolicy;
> ....
> }
>
> class RootPolicy {...}
> class MyFirstPolicy: RootPolicy {...}
> class MySecondPolicy: RootPolicy {...}
>
> etc.
This is the exact approach I would like to take, however there seems to be
several problems associated with this... I guess that it mostly boils down to
the fact that I need to have the rank as parameter, but as Brad previously
explained, I can't have that in the base class. So I had to push it down to
child classes, which brought its own problems. That is, it seems I can't do
compile time checks of rank in MyBlockDist, since it's the child class that has
the rank parameter. I tried writing a getRank() method which is overridden in
child class, but it didn't work. This also seems to make assignment of domains
fail at compile time.
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