I got this by discussions in another thread of swift-evolution. The result
is interesting. I don't know if it should be treat as a bug.
protocol Good {
func printSomething(something:String)
}
extension Good {
func printSomething() { self.printSomething("Good") }
}
struct Name:Good {
func printSomething(something: String = "John") {
print(something)
}
}
struct Talk:Good {
func printSomething(something: String = "Hahaha") {
print(something)
}
}
var protocols:[Good] = [Name(), Talk()]
for p in protocols {
p.printSomething() // Good, Good instead of John, Hahaha
}
As you can see, the final result is "Good, Good", not as I expected "John,
Hahaha", is that right or is it a bug?
zhaoxin