The short answer is to read chapter 14, probably more than once, before it makes sense. It took me 2 times: http://book.realworldhaskell.org/read/ http://book.

The short answer is to read chapter 14, probably more than once, before it makes sense. It took me 2 times: http://book.realworldhaskell.org/read/ http://book.realworldhaskell.org/read/