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Checkpoint 8: Question about Protocol Extensions

Forums > 100 Days of SwiftUI
@fischej  HWS+

Why can you have a concrete method implementation in a protocol extension, but not in the protocol itself? This may be more philosophical than pragmatic, but I feel I'll understand Swift better if I know the answer.

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@Obelix  

@twoStraws gives a great answer in a 2018 article. Bonus: he uses a StarWars example!

The key is coding with intent! What are your intentions? Swift protocol extensions help you express your intent.

See -> Use the Force of Protocol Extensions

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@fischej  HWS+

Thanks! I'm gonna have to read that a few times before I get it, but it certainly seems to address the issue.

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