Compare the object-oriented design with the protocol-oriented solution and see the differences.
- [Instructor] We can model the same system…with protocols or with super classes.…Yet protocols provide more flexibility.…They are all about abstraction.…Protocols tell conforming types what…to do rather than how to accomplish…a certain functionality.…With a protocol oriented approach…we can create more granular designs…that are easier to maintain and enhance.…Let's summarize the main differences…between the protocol oriented design…and the object oriented way of designing…the software system.…
Subclasses may inherit unnecessary functionality…and data from the super class.…The internals of super classes get exposed…through inheritance which leads to unnecessary…complexity being shared with classes.…With protocol conformance we get loose coupling.…In a protocol oriented design the inheritance…hierarchies are replaced by protocol conformance.…The protocol oriented design promotes loose coupling…between types.…Unlike with sub classing types don't inherit…unnecessary functionality or data.…
They only receive the methods and properties…
Author
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
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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: POP vs. OO: The differences