Thanks again for the detailed and explanatory answer. That's the reason I'm writing these huge responses, because I hope I can > shorten this journey for others. >
This has certainly helped me grasp some aspects in this regard. While Monad Transformers are awesome and can solve many problems quite > easily, I'm pretty sure that there is almost always a nicer, "more > functional" way to solve such a problem. Incidentally, I happened to bump in to this paper, it claims they have found a way that allows us get rid of the need of monad transformers in a more systematic manner, by using what they call "Monad coproduct". The paper titled "Composing Monads Using Coproducts" is here. [1] I haven't understood it much till now, and it seems I will have to try real hard to read this paper. Ref. [1] http://isi.uni-bremen.de/~cxl/habil/papers/icfp02.pdf Thanks and regards, -Damodar Kulkarni
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