Protocol Oriented Programming - Vahagn Gevorgyan

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https://youtu.be/oUeMV17jYBw

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GitHub: https://github.com/gevorgyanvahagn

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Transcript

1. Protocol Oriented Programming in Swift at its heart, Swift is protocol-oriented
2. 1.Protocols in Swift? 2.Problem with “Fat” base classes 3.Solving the problem with “Protocol oriented programming” Protocol Oriented Programming in Swift
3. protocol SomeProtocol { // protocol definition goes here } Protocols blueprint of methods, properties, and other requirements that suit a particular task or piece of functionality
4. “Fat” base class
5. Object Car
6. class Car { func startEngine () { … } func stopEngine () { … } ... }
7. Mercedes CLS
8. class MercedesCLS: Car { ... }
9. class AudiA5: Car { ... }
10. class MercedesSLK: Car { ... }
11. class ChevroletMonteCarlo: Car { ... }
12. class MercedesCLS: Car {} class AudiA5: Car {} class MercedesSLK: Car {} class ChevroletMonteCarlo: Car {} Cabriolet
13. func openRoof () { … } func closeRoof () { … }
14. class Cabriolet: Car { func openRoof () { … } func closeRoof () { … } }
15. Marex 350 cabriolet cruiser
16. class Marex350: Cruiser { // Marex350 functionality func closeRoof () { ... } func openRoof () { … } }
17. Base Class Car Cruiser
18. func openRoof () { … }
19. func openRoof () { … }
20. Protocol Oriented Programming 2. Protocol Extensions 3. Protocol Inheritance 1. Protocol Composition
21. class MercedesSLK: Car { ... } Protocol Composition class MercedesSLK: Car, Cabriolet, Coupe { ... }
22. extension Cabriolet { func openRoof() { ... } func closeRoof() { ... } } Protocol Extensions
23. extension Cabriolet where Self: Car { func openRoof() { ... } func closeRoof() { ... } } Protocol Extensions Constraints extension Cabriolet where Self: Cruiser { func openRoof() { ... } func closeRoof() { ... } }
24. protocol HardTopConvertable: Cabriolet { ... } Protocol Inheritance
25. protocol Coupe { … } protocol SUV { … } ...
26. Real Life Examples KeyboardHandler ImagePicker
27. Vahagn Gevorgyan Linkedin: https://www.linkedin.com/in/gevorgyanvahagn/ GitHub: https://github.com/gevorgyanvahagn