Learn how to design a basic software system using classes and inheritance.
- [Instructor] Sift lets us design our software…both in a protocol-oriented…and an object-oriented way.…It also supports generic and functional programming,…and often blurs the lines between…the various programming paradigms.…Let's see some benefits of using POP…over the classical object-oriented approach.…Let's assume that we want to implement…UI components which support specific animations…and feature custom rounded corners.…To demonstrate the problem,…we'll start with the classical superclass-based approach.…
Now I'm going to open up Xcode…and create a playground project for this demo.…Blank is good.…Let's put it on the desktop.…I'm going to call it SuperClassWay.…Now let's remove the border plate code…and also the comment.…We only need the UIKit framework.…All right.…I'm going to create a UI view subclass.…Let's call it CustomView.…
It inherits from UIView.…To keep it simple,…we'll support only one kind of animation…in this example.…So let's implement the simple animation…that fades out and then fades back in the view.…
Author
Károly Nyisztor
Released
1/2/2018- Comparing object-oriented programming with protocol-oriented programming
- Methods and class-bound protocols
- Adopting a protocol
- Generics
- Declaring asynchronous behavior
- Preparing and implementing fallback logic
- Implementing an app using protocol-oriented programming
Skill Level Intermediate
Duration
Views
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Introduction
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Welcome1m 3s
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1. Protocol-Oriented Programming
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The object-oriented way7m 28s
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POP vs. OO: The differences3m 50s
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2. Protocols
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What's a protocol?2m 29s
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Adopting a protocol1m 8s
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Polymorphism4m 12s
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Protocol inheritance4m 31s
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Protocol extensions4m 59s
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Protocol composition4m 23s
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3. Generics
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Why generics?1m 31s
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Generic types3m 15s
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Generics and protocols2m 48s
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Constrained associated types2m 51s
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4. Implement the Weather App Using POP
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Weather app design2m 54s
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Project overview1m 53s
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Presenting data4m 18s
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Fallback service3m 24s
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Implement fallback logic4m 3s
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Conclusion
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Next steps45s
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Video: The object-oriented way