FRP my Swift

In this talk, my goal is to present my process of learning what FRP was, what was the thought process behind it and how using it made my Swift project more concise and easier to understand.

Transcript

1. FRP MY SWIFT!
2. About me Afonso Graça ! @ Unbabel Building mobile apps (and some web too) Livetweeting " @AfonsoGraca
3. How did you get to ?
4. Option 1 Go along R. Alves Redol, Av. de António José de Almeida and Av. Defensores de Chaves Then take Av. de Berna, Av. Calouste Gulbenkian and Av. Ceuta to R. Fradesso da Silveira Finally turn to R. Rodrigues de Faria …Aaaand drop me at no. 103. How did you get to ?
5. Option 2 Take me to Lx Factory please! Option 1 Go along R. Alves Redol, Av. de António José de Almeida and Av. Defensores de Chaves Then take Av. de Berna, Av. Calouste Gulbenkian and Av. Ceuta to R. Fradesso da Silveira Finally turn to R. Rodrigues de Faria …Aaaand drop me at no. 103. How did you get to ?
6. Option 2 Take me to Lx Factory please! Option 1 Go along R. Alves Redol, Av. de António José de Almeida and Av. Defensores de Chaves Then take Av. de Berna, Av. Calouste Gulbenkian and Av. Ceuta to R. Fradesso da Silveira Finally turn to R. Rodrigues de Faria …Aaaand drop me at no. 103. How did you get to ? Imperative Declarative
7. Imperative vs. Declarative How you are going to achieve Keep state and mutate it What you are want to achieve Context-Independent Simpler, more readable
8. Should I start to code only in a declarative way?
9. Should I start to code only in a declarative way? Probably not.
10. We should strive to achieve
 a nice balance
 between both in our codebases
11. We should strive to achieve
 a nice balance
 between both in our codebases How? Functional Reactive Programming
 (from now on known as FRP)
12. FRP ‣Sequences ‣Transformations ‣Bindings
13. Sequences
14. Transformations
15. Bindings
16. RxSwift Sequences ▸ Observables Transformations ▸ map, filter, reduce… Bindings ▸ Bind and Subscribe And never forget the DisposeBag
17. How did it help me? Demo time
18. It’s Magic! Same functionality
 70% less code Optimized version 60% less code Overall better Readability
19. Want to go deeper? ‣ github.com/afonsograca/pixels_camp_frp_my_swift ‣ github.com/ReactiveX/RxSwift/ ‣ rxmarbles.com ‣ reactivex.io ‣ github.com/artsy/eidolon/
20. Afonso Graça " @AfonsoGraca # afonsograca.com $ afonsograca Thank You!