> However, I find that I'm having trouble figuring out what I get for free when > I implement a protocol. In principle, I like conditional conformances and > synthesized implementation of protocol methods, but I find that they both > make it harder to figure out what I need to implement, and what are going to > be the performance characteristics of methods that I choose to not implement.
If you're thinking specifically about the standard library, the documentation for protocols like Sequence shows whether a member is required, and whether it provides a default implementation. https://developer.apple.com/documentation/swift/sequence#2923865 <https://developer.apple.com/documentation/swift/sequence#2923865> Have you noticed that before, or is it still tricky to find requirements given the presentation? -Kyle
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