Networking : PortNumber

[Thomas L. Bevan]

Sorry,

I've just worked it out.

PortNumber is an instance of the class Enum
so we can use

 toEnum :: Int -> a

Tom

On Tue, 3 Jun 2003 05:25 pm, Thomas L. Bevan wrote:
> Hi,
>
> 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.
>
> Tom
>
>
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