[swift-evolution] [Draft] open and public protocols

Adrian Zubarev adrian.zubarev at devandartist.com
Sun Feb 19 10:11:21 CST 2017

@Matthew: Have you considered what happens with the access modifier of an open protocol when an open/public class conforms to it?

// Module A
open protocol A {
    func foo()

// Module B
open class B : A {
    (open or public) func foo() {}
    // If `open`, can we downgrade to `public`?
    // The other way around seems straightforward 
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