Re: [Haskell-cafe] Re: Is 78 characters still a good option? Was: breaking too long lines

On Thu, Apr 23, 2009 at 8:29 PM, Achim Schneider wrote:

Maurí­cio wrote:

...

Maybe we could learn with them: what about if Haskell Weekly News had a section on code review, like many newspapers have book review sections?

The weekly WTF?

I'm not sure such a thing is good... At the very least, such reviews should be anonymous, especially if we're going to cover bad code instead of good. Here's my contribution: I was cabalizing a package once, and I chucked into the build-depends 'ghc' and made it build. About 30 seconds later, it occurred to me that this was a geometry library and what the heck was it doing with the GHC API? So I go looking, and I find a module of utility functions. It's importing GHC.Base. I remove the import and scroll down to see the error. It turns out that 20 megabytes of GHC code was being linked into this program for one function. I took the quick way out and typed into the module: 'isJust Nothing = False; isJust (Just a) = True'. -- gwern