Prelude function suggestions

[Tomasz Zielonka]

On Thu, Jul 29, 2004 at 06:29:52PM +0200, Henning Thielemann wrote:
> Say, you have some stop condition that you want to use in connection with
> unfoldr: 
> 
> unfoldr (\n -> toMaybe (n<10) (n,n+1)) 0

How about using MonadPlus instance for Maybe? It seems a bit clearer to
me.

    unfoldr (\n -> guard (n<10) >> return (n,n+1)) 0

Best regards,
Tom

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