From Simple IO to Monad Transformers

From Simple IO to Monad Transformers is written for you if you know some Haskell, have seen a description or example of Haskell’s monads, and are not yet comfortable with the concept. You are also expected to have enough math background
to understand that function composition makes up some kind of algebraic system.

This ebook’s objective is to help you develop an intuitive notion of monad that is accurate enough to be useful. You may have found this difficult to achieve because the concept is...