I knew Haskell before Swift, and these are some of the things that I’ve been able to bring to writing Swift. - Immutable objects and less reliance on state. - Passing functions, and partially applied functions around as well as values. - Short, pure, composable functions. - Patterns (dare I say the word “Monad”) which are not as scary as they sound. - Less of a reliance on OOP practices; values and functions that transform those values into other values is sometimes a better option than objects with methods that mutate them. - Strong types and type driven development are good things, not something fight against. - map, applicative, bind are big words for simple concepts that are easily understood and can be elegantly applied. - I want people to embrace these changes rather than be intimidated by them. Just because they are unfamiliar, doesn’t make them complex.

This talk was recorded at AltConf 2015. Watch all the videos!