> On Nov 1, 2016, at 7:23 AM, Toni Suter via swift-evolution > <[email protected]> wrote: > > In Swift 3, I can declare a postfix operator that starts with a ? or a !, but > as far as I can tell, there's no way to actually use such an operator: > > I think it would probably be best to disallow postfix operators that start > with a question mark or an exclamation mark. > At the moment it is possible to declare them, but not to use them. That's not > very user-friendly.
This looks like a bug — the documentation and the behavior disagree. The docs say: > Although you can define custom operators that contain a question mark (?), > they can’t consist of a single question mark character only. Additionally, > although operators can contain an exclamation mark (!), postfix operators > cannot begin with either a question mark or an exclamation mark. https://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift_Programming_Language/LexicalStructure.html#//apple_ref/doc/uid/TP40014097-CH30-ID418 _______________________________________________ swift-evolution mailing list [email protected] https://lists.swift.org/mailman/listinfo/swift-evolution
