What version of ghc are you using?
In recent versions ghc doesn't support pattern matching of expressions
like (n+1).
You can rewrite that factorial function as
factorial n = n * factorial (n-1)
instead.
best,
Eugene
> _______________________________________________
On 3 September 2012 22:08, Iwan Awaludin <awaludin@gmail.com> wrote:
> Dear Sir/Madam
> I Installed Haskell Platform 2012.2.0.0 for Windows and try to load Stdm.lhs
> which is downloaded from
> http://www.dcs.gla.ac.uk/~jtod/discrete-mathematics/Stdm.lhs
> I have this error:
> stdm.lhs:1160:14: Parse error in pattern: n + 1
> Failed, modules loaded: none.
>
> Is there anything I should do to make it right?
> Thank you.
>
> --
> Iwan Awaludin
>
>
>
>
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