On Thu, Jan 19, 2012 at 8:53 PM, Edward Z. Yang <ezy...@mit.edu> wrote: > It's not obvious that this should be turned on by -Wall, since > you would also trigger errors on uses like: > > [ x | Just x <- xs ]
I was going to say, perhaps refutable matches were considered important was because back then list and monad comprehensions were still the same. List-comps is the only place I use refutable matches, but they're extremely handy. I would have suggested that listcomp match failures yield [] but monad ones be errors, but now that list comps and monads are back together again maybe that's not so easy to do... _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
