[swift-evolution] Swift evolution proposal: introduce typeprivate access control level

Adrian Zubarev adrian.zubarev at devandartist.com
Fri Dec 2 05:58:34 CST 2016

IMO there is no need for something like typepublic to even exist, but in theory it would be something like where a subclass has more visibility of the internal stuff of its super type. I’m just saying that someone will want this, because that person might thing that typepublic and typeprivate would be consistent.

In general I’m for anything that adds flexibility, but flexibility means also more complexity.

The thing is, typeprivate cannot replace fileprivate, just because fileprivate adds internal visibility to other scopes inside the same file and does not restrict it to the same type. And I really love that aspect of Swift. :)

It already has been discussed thousands of times but I cannot resist and also state my preference to something like:

private       // like `private(scope)`
private(file) // like `internal(file)`
private(type) // in your case
This is a POP language right? So lets focus on fixing and improving protocols. :) We should start with open/public protocol.

PS: I also cannot wait for existentials to drop typealias ProtoB = Any<Proto> where Proto.A == B where B comes from a generic parameter list and A is an associated type.

Adrian Zubarev
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Am 2. Dezember 2016 um 12:36:45, Gonçalo Alvarez Peixoto (goncalo.alvarezpeixoto at gmail.com) schrieb:

Also, would you be so kind to provide an example where typepublic would be useful? Maybe you're thinking of allowing member access to subclasses? Would that fall into a possible "protected" realm?
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