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One of the most common patterns I see in software design with Objective-C (and sometimes Swift), is the use of enumeration types (enum) as configurations for...

If you’re not switching over an enum, then you’re using it for its properties. We have a better tool for value types with properties: structs.

“Enums are for switching. If you aren’t going to switch over a value—outside of the type—then use a struct.”

This maintains proposals for changes and user-visible enhancements to the Swift Programming Language. - swift-evolution/0192-non-exhaustive-enums.md at main · apple/swift-evolution