I thought that function composition (.) arises from the category instance for (-... | Hacker News

Hacker Newsnew | past | comments | ask | show | jobs | submit

		boothead on July 22, 2013 \| parent \| context \| favorite \| on: Haskell Lenses In Pictures I thought that function composition (.) arises from the category instance for (->)? Actually on checking it seems that Prelude re-exports (.) from Data.Function. I'm sure I read somewhere that these had been unified, was I wrong?

tome on July 22, 2013 [–]

I believe the argument against unifying is that you get very hard to decipher error messages.

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact