[swift-evolution] [Review] SE-0023 API Design Guidelines

Ricardo Parada rparada at mac.com
Thu Jan 28 17:28:37 CST 2016


I am used to enum cases being UpperCamelCase from Java, although sometimes I’ve seen them in all caps.  I think of enum cases as their own type even though they are a member of the enum type.  

It is similar to inner classes in Java for example.  I would not like enum cases to be lowerCamelCase.


> On Jan 23, 2016, at 1:45 PM, Kevin Lundberg via swift-evolution <swift-evolution at swift.org> wrote:
> 
> 
>> On Jan 23, 2016, at 1:24 PM, Trent Nadeau via swift-evolution <swift-evolution at swift.org> wrote:
>> 
>> I think it makes sense for enum cases to be UpperCamelCase as they can be thought of as scoped types (singleton types in the case of cases with no associated types).
> 
> This reasoning makes sense to me. It's also a convention that I've seen on other languages like Java and C# where enum cases are capitalized even though they aren't strictly types of their own.
> 
>> Option set elements, on the other hand, I think really are values so it may make sense for those to be lowerCamelCase.
> 
> I think of option set elements in the same way as enums here, where each option set option can behave as an individual singleton type that represents a specific value. The way they're used reminds me a lot of how enums are typically used, just with multiple instances at once in a set instead of a single enum case.
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