4 ms·

Yeah, Arrows is my "next thing".

• jerf 12y ago
  You may not want to bother. Their luster has faded as it has been determined they were a particularly complicated way of representing Applicative + Category: http://just-bottom.blogspot.de/2010/04/programming-with-effects-story-so-far.html http://just-bottom.blogspot.de/2010/04/programming-with-effe... In theory there's nothing necessarily wrong with them but I think the consensus is that in practice you're better off understanding Applicative (very simple) and Category (also very simple), and then freely combining those however you need to accomplish things, rather than trying to use Arrow (surprisingly complicated). By contrast, both Applicative and Category as very, very useful.