> While converting to Swift3, my biggest hurdle was figuring out what to do
> with a custom NSNotification. In Objective-C, it’s a plain NSString, and the
> same in Swift2.
>
> I assumed in Swift3 that it worked like ErrorProtocol and errors as enums,
> but as it turns out, you need to create a custom instance of
> Notification.Name(“MyNotificationName”). This does not seem very Swifty, and
> I think it would work better if there was a NotificationNameProtocol and you
> could create enums with String raw values.
The migrator constructs the Notification.Name instances at the call site, but I
believe the *actual* intent is that you should assign them to a constant—either
one in your own type:
// Old
let MyClassWillFooNotificationName = "MyClassWillFoo"
// New:
class MyClass: … {
static let WillFoo = Notification.Name("MyClass.WillFoo")
}
Or in an extension to `Notification.Name` itself.
--
Brent Royal-Gordon
Architechies
_______________________________________________
swift-evolution mailing list
[email protected]
https://lists.swift.org/mailman/listinfo/swift-evolution
