[swift-evolution] [Review] SE-0023 API Design Guidelines (when to use properties)

[Brent Royal-Gordon]

> There has to be an
> underlying assumption that an Array's count must be a property, or
> something else of that sort, in the background.

You know, this would be a language change, but it occurs to me that, if a property could satisfy a protocol requirement for a parameterless method with no overloads, you *could* have an O(1) rule for properties. `Collection` would require a count() method, and `Array` would have a `count` property, and that would satisfy the requirement.

-- 
Brent Royal-Gordon
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