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iOS Swift Protocols Creating Flexible Objects with Protocols Building Flexible Objects

Posted by Kristofer Doman
Kristofer Doman
18,307 Points

Wouldn't Car just conform to protocol Vehicle?

I mean, I'm sure you could do it either way, but it wouldn't conform to numberOfSeats then.

If you just did protocol Car: Vehicle instead, wouldn't it conform to all 3?

2 Answers

J Kim
J Kim
15,218 Points
J Kim
J Kim
15,218 Points

I think it should've been. It's a rather poor example / design.

Alp Eren Can
Alp Eren Can
25,230 Points
Alp Eren Can
Alp Eren Can
25,230 Points

As you've said it, it could go either way. I think Pasan was just trying to make room for the motorcycle example that it can conform to Vehicle protocol while Car conforms to Breakable and Drivable.

J Kim
J Kim
15,218 Points

Still that is a bad design. Motorcycle and Car should both conform to Vehicle protocol since Vehicle protocol already belongs to Breakable and Drivable.

There is no rational explanation for why Car should conform to both Breakable and Drivable directly when Car would clearly conform to Vehicle