Re: [Haskell-cafe] chr/ord?

1 May 2009

      Thank you.

I assumed when I saw this:

"we could use Maybe's
mplus to define a function,
parent s = (mother s) `mplus` (father s)"

that mplus was *already* present in Maybe.

Michael

--- On Fri, 5/1/09, Neil Mitchell  wrote:

From: Neil Mitchell 
Subject: Re: [Haskell-cafe] chr/ord?
To: "michael rice" 
Cc: "haskell-cafe@haskell.org" , "Anton van Straaten" 
Date: Friday, May 1, 2009, 6:32 AM

Hi
...
But I get this when I try to use it:
sheep.hs:30:22: Not in scope: `mplus'
[michael@localhost ~]$
You need to import Control.Monad. You can find answers to these sorts
of questions with Hoogle: http://haskell.org/hoogle/?hoogle=mplus

Thanks

Neil