[swift-users] Should Array's `append(_)` function cause `didSet`?

[Marco S Hyman]

> On Jul 7, 2017, at 9:48 PM, Zhao Xin <owenzx at gmail.com> wrote:
> 
> Thank you very much Marco. But What is  “outside of an initializer” really bothers me. **Both** `func bar(keysAndValues:Dictionary<String, String>)` works now. **Are they really outside ?**

Uhhh, that is certainly not the results I’d have expected.  Perhaps one of the  swift language lawyers can explain.