Networking : PortNumber
Thomas L. Bevan
Tue, 3 Jun 2003 17:28:05 +1000
I've just worked it out.
PortNumber is an instance of the class Enum
so we can use
toEnum :: Int -> a
On Tue, 3 Jun 2003 05:25 pm, Thomas L. Bevan wrote:
> How can I take some input and convert this into a
> PortID ?
> I don't quite understand why the constructor
> PortNumber doesn't have the signature
> PortID = PortNumber Int | ...
> Instead it is
> PortID = PortNumber PortNumber
> where PortNumber is not a member of the Read class.
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