Implementation of Clean Architecture using FRP

Talk by Daria Kovalenko

Даша расскажет о реализации принципов Clean Architecture с использованием FRP (RxSwift).
Что будет:
- решение типовых задач и проблем
- лайфхаки и операторы
Чего не будет:
- унылой теории

This talk was made for CocoaFriday #4 ( https://cocoaheads.org.ua/cocoafriday/4) which took place Jun 14, 2019

Video: https://youtu.be/bTwvSDZhs3I

Transcript

1. Implementation of Clean Architecture using FRP Daria Kovalenko iOS Developer at Anadea
2. View
3. View - UIKit (UIViewController, UIView) - layouts - animations - user’s actions
4. Store
5. Store Store Rest Services DAOs Local storage Profile Store Order Store Contacts Store
6. Store - fetches data from network - stores data in local storage - updates data - creates/deletes stores - switches to other stores
7. Page
8. Page - fetches data from store - transforms store data for presentation - transforms store data to subpages - sends updates to store - owns store - generates other pages
9. Store Page View Dependency rule
10. Why RxSwift? Store: Observable Page: Observable, BehaviorSubject (PublishRelay, BehaviorRelay), Action View: RxCocoa extensions, RxDataSources etc
12. How it works?
13. Store extension example
14. Store
15. Base pages
20. Bind with RxSwift
21. Bind operator ||>
22. Bind operator <||>
23. Before: After:
24. Navigation
25. UIViewController Page User action
26. UIViewController Page User action Next Page Controller Navigator
27. UIViewController Page User action Next Page Controller Navigator Router Next Page
28. UIViewController Page User action Next Page Controller Navigator Creates next UIViewController Router Next Page
29. UIViewController Page User action Next Page Controller Navigator Creates next UIViewController Router Next Page Presents next UIViewController
30. Router (first vision)
31. Protocols for binding page and UIViewControllers
32. Controller creation
34. Conclusions - independent layers - changes of store does not change UI and vice versa - different ViewControllers can be built in different ways (storyboards, nibs, pin layouts etc) - UI components can be wrapped to RxCocoa and easy binded - needs extra input/output models between layers - need to handle side effects of bindings - control disposeBag for binding on different type of UI - UITableViewCells, subviews to avoid multiple bindings
35. Questions