[swift-evolution] [Proposal Draft] Flexible memberwise initialization

[Brent Royal-Gordon]

>> The proposal already states that a memberwise initializer only includes parameters for properties that are at least as visible as the initializer itself. So if you can see the `s` and `i` parameters, you can also see the `s` and `i` properties. It's not going to expose anything that isn't already visible.
> 
> This isn’t about access modifiers, it’s about the name chosen for internal variables vs. names chosen for API contracts.

But if you have a bad name in your memberwise initializer, that bad name is *by definition* already part of your API contract as a property name.

Stated another way: Either the name is already externally visible as a property, and thus is not by any sensible definition an "internal" name, or the memberwise initializer will not publish it.

-- 
Brent Royal-Gordon
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