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![Imperative
Do this 5 times!
func nullToNil(dict: [String: AnyObject])->[String: AnyObject]{
var cleaned = [String: AnyObject]()
for (key, value) in dict {
if !(value is NSNull) {
cleaned[key] = value
}
}
return cleaned
}](https://image.slidesharecdn.com/hipsterorientedprogramming-150721095700-lva1-app6892/75/Hipster-Oriented-Programming-6-2048.jpg)
![Functional
Same input, same output.
let l : List<Int> = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
let sum = l.reduce(curry(+), initial: 0) // 55](https://image.slidesharecdn.com/hipsterorientedprogramming-150721095700-lva1-app6892/75/Hipster-Oriented-Programming-7-2048.jpg)
Uploaded byJens Ravens
Hipster Oriented Programming
The document discusses different programming paradigms including imperative, object-oriented, functional, protocol-oriented, and functional reactive programming. It provides examples of code using each paradigm and how to recognize them. It notes that the paradigms often mix together and provides some additional resources on concepts like monads, signals, and bridging between paradigms in Swift.
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Hipster Oriented Programming
- 1.
- 2. I hate monadsalready. Even if it’s the most useful, elegant thing - it’s all what’s wrong about hype based hipster-programming in one word. - tweet after UIKonf
- 3. Is it reallyfunctional programming if you don't give a talk about it? - @alejandrocrosa
- 4. This talk isnot about functional programming.
- 5.
- 6. Imperative Do this 5times! func nullToNil(dict: [String: AnyObject])->[String: AnyObject]{ var cleaned = [String: AnyObject]() for (key, value) in dict { if !(value is NSNull) { cleaned[key] = value } } return cleaned }
- 7. Functional Same input, sameoutput. let l : List<Int> = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] let sum = l.reduce(curry(+), initial: 0) // 55
- 8. Functional Reactive Stream ofevents being processed.
- 9. Functional Reactive Stream ofevents being processed. voiceSignal .filter { response in return response.intent == WitIntent.Eat } .bind(WitResponse.getSubject) .map{ subject in self.speak("I will search for recipies for (subject).") return subject } .bind(RecipeSearch().search) .map { recipes in self.speak("Please select on of these recipies.") return recipes } .bind(RecipePickerViewController().selectRecipe(self)) .map { ingredients in self.speak("Do you have all the ingredients or should I order some online for you?") return ingredients } .bind(ShoppingList.selectIngredients(self)) .bind(Shopping.order) .bind(PayPalViewController().checkout(self))
- 10. Object Oriented Put yourfamily of objects in a room and let them talk.
- 11. Protocol Oriented You havea lot of equatable, comparable, parseable, archiveable, transmittable, displayable objects.
- 12.
- 13. Question State Howto recognise? IP imperative How? a lot of nested loops and assignments OOP object oriented How? (but encapsulated) encapsulated state seperation of concerns “unix principle” POP protocol oriented What? encapsulated objects implementing hundreds of protocols. FP functional What? no state. you have no idea what it’s doing, but it’s short and beautiful. FRP functional reactive When? over my dead lambda. you’re constantly binding
- 14. They all mixpretty well. - pretty big secret
- 15.
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- 17.
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- 19.
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- 21.
- 22. These are justconcepts.
- 23. These are justconcepts. They won’t hurt you, they won’t take away your job.
- 24. It’s more outthere than just object oriented programming.
- 25. object oriented programming hasa lot of hidden gems you might not be aware of yet.
- 26.
- 27. Functors, Applicatives and Monadsin Pictures. http://adit.io/posts/2013-04-17- functors,_applicatives,_and_monads_in_pictures.html
- 28. The Introduction toRP you’ve been missing. https://gist.github.com/staltz/868e7e9bc2a7b8c1f754
- 29. Imperative Programming InSwift (Graham Lee) sicpers.info/2015/07/imperative-programming-in-swift/ Protocol-Oriented Programming in Objective-C sicpers.info/2015/06/protocol-oriented-programming-in- objective-c/ Mutable objects in immutable objects in object-oriented programming in functional programming in Swift sicpers.info/2015/06/mutable-objects-in-immutable- objects-in-object-oriented-programming-in-functional- programming-in-swift/
- 30. Thank you. @JensRavens jensravens.de (and benice to the next monad you meet)