Even if you can't go any functional, knowing FP has benefits. As an example, 25 years ago I did work on 8-bit video games. About as far from FP as you can get.

Even if you can't go any functional, knowing FP has benefits. As an example, 25 years ago I did work on 8-bit video games. About as far from FP as you can get. Back then, I filled many sheets of paper convincing myself that rearranging my code and data in certain beneficial ways would actually work. I could have eliminated much of this drudgery had I known then what I know today about FP. See [1] for one example in which knowing two things – (1) what an involution was and (2) that applying (reverse ⋅ concat) is the same as applying (concat ⋅ reverse ⋅ map reverse) – would have let me go immediately to the preprocessing solution that I had to painstakingly work out on paper. [1] http://blog.moertel.com/posts/2013-12-14-great-old-timey-game-programming-hack.html http://blog.moertel.com/posts/2013-12-14-great-old-timey-gam...