Although a lot of functional programming tutorials are very mathematical like the author says, not all of them are. Real World Haskell (http://book.realworldha

Although a lot of functional programming tutorials are very mathematical like the author says, not all of them are. Real World Haskell (http://book.realworldhaskell.org/read/ http://book.realworldhaskell.org/read/) is a great book on Haskell that shows how to actually solve real world problems using functional programming. Maybe with enough references like this FP will catch on? Or maybe lack of good documentation isn't what's holding it back?