I was reading this nice listing of Swift keywords
(https://medium.com/the-traveled-ios-developers-guide/swift-keywords-v-3-0-1-f59783bf26c#.2s2yis3zh)
and three of them struck me as potentially not long for this world and I was
thinking if we needed/could deprecate them before any kind of ABI stability set
in.
I'm listing them here but it might be worth starting separate discussions for
each of them.
Final
Can someone tell me what is the use of 'final' now that we have 'public'
default to disallowing subclassing in importing modules? I know that 'final'
has the added constraint of disallowing subclassing in the same module, but how
useful is that? Does it hold its weight? Would we add it now if it did not
exist?
Lazy
This one is clearer: if Joe Groff's property behaviors proposal from last year
is brought forward again, lazy can be demoted from a language keyword to a
Standard Library property behavior. If Joe or anybody from the core team sees
this: do we have any luck of having this awesome feature we
discussed/designed/implemented in the Swift 4 timeframe?
Fileprivate
I started the discussion early during the Swift 4 timeframe that I regret the
change in Swift 3 which introduced a scoped private keyword. For me, it's not
worth the increase in complexity in access modifiers. I was very happy with the
file-scope of Swift pre-3. When discussing that, Chris Latner mentioned we'd
have to wait for Phase 2 to re-discuss it and also show proof that people
mostly used 'fileprivate' and not the new 'private' modifier as proof if we
want the proposal to have any weight. Does anybody have a good idea for
compiling stats from GitHub on this subject? First of all, I've always found
the GitHub Search quite bad and don't know how much it can be trusted.
Secondly, because 'private' in Swift 2 and 3 have different meanings, a simple
textual search might get us wrong results if we don't find a way to filter on
Swift 3 code.
Thanks for hearing me out!
David.
_______________________________________________
swift-evolution mailing list
swift-evolution@swift.org
https://lists.swift.org/mailman/listinfo/swift-evolution
