[swift-evolution] Proposal SE-0009 Reconsideration

Vladimir.S svabox at gmail.com
Thu May 19 13:12:59 CDT 2016

Oh, in this case IMO warning for 'self.' will never be introduced, it's 
clear. And as I understand, no support in community for warning for 
shadowing. OK, so as I understand, the only solution here - tools like 
SwiftLint and plugins to xcode.

Btw, regarding 'similar to the override keyword', do you mean something 
like this:

class A {
   public var x = 10

   func f() {
     override var x = 100

     var value: Int? = 1
     if override let value = value {..}


On 19.05.2016 20:58, David Waite wrote:
> I believe the Swift Team has previously stated they do not want opt-in
> warnings defining alternate swift ‘grammars’. I don’t believe there are
> any existing -W flags for the compiler, for instance.
> If there is shadowing warning added, I’m of the opinion it should work
> similar to the override keyword.
> -DW
>> On May 19, 2016, at 11:28 AM, Vladimir.S via swift-evolution
>> <swift-evolution at swift.org> wrote:
>> On 18.05.2016 22:43, Krystof Vasa wrote:
>>> I agree that shadowing variables is not a good idea, but I stand by
>>> my point that it's potentially dangerous and error-prone to allow
>>> accessing instance variables without `self`.
>> Could we all agree that we need these options: 1. option to turn on
>> warnings on accessing instance variables without `self` 2. option to
>> turn on warnings on shadowing And that by default, none of that
>> options should be enabled. ?
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