> Hi,
> I am trying to create an overloaded function "ŕ la Java" to be able to
> call it either with a string or a number.
> Ex :
> definePort "http"
> definePort 80
> but I have problem with restrictions in Haskell's type system
> Is there a better solution ?
If we knew /why/ you wanted to do this we might be able to
help. I can't see why you want to allow Strings, which have
far too wide a range of values, as arguments to something
that takes a port designator as an argument.
data Port = Tcpmux | Nbp | Echo_ddp | Rje | Zip | Echo_tcp | ...
deriving Enum, ...
instance Num Port where ...
would seem like a better way to me.
Jón
--
Jón Fairbairn [EMAIL PROTECTED]
31 Chalmers Road [EMAIL PROTECTED]
Cambridge CB1 3SZ +44 1223 570179 (after 14:00 only, please!)
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