Thanks Jason,
>
> You should make a `Functor' instance since monads are all
> functors (though the typeclass does not enforce this).
>
What are the benefits of making it an instance of Functor?
> You can use `guard' and `when' and other monadic operations.
> The `MonadPlus' instance gives you access to `msum'. It's not
> just about `do' notation :)
>
I'd appreciate it very much if you could give me some pointers on the usages of
guard, when and msum.
Regards,
Kashyap
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