Re: [Haskell-cafe] Prelude.undefined

On Wed, Mar 3, 2010 at 6:15 AM, Ivan Miljenovic wrote:

On 3 March 2010 16:11, Tom Hawkins wrote:

...

-Wall only complains about shadow bindings, defined but not used, and no type signature.  But no unmatched patterns.

Yes it does: one of the options it brings in is -fwarn-incomplete-patterns which tells you if you've missed a pattern match.

http://www.haskell.org/ghc/docs/latest/html/users_guide/options-sanity.html

I think he meant that it doesn't because he doesn't have any :)