[swift-evolution] [swift-evolution-announce] [Review] SE-0099: Restructuring Condition Clauses
xiaodi.wu at gmail.com
Tue May 31 14:47:39 CDT 2016
On Tue, May 31, 2016 at 2:45 PM, Christopher Kornher via swift-evolution <
swift-evolution at swift.org> wrote:
>> Not allowed:
>> let a = a
>> let b = b where b > 10 && a > 5
> Why would this not be allowed by your rule? You're making use of `b` in
> your where clause. As I demonstrated above, essentially any assertion can
> be rewritten to work around your rule. In general:
> It is not allowed because ‘a’ is defined in the line above. It must be
> defined in the ‘if let’ associated with the where in which it is mentioned.
That's a much more restrictive where clause than you proposed earlier.
You'd not be able to write:
let b = b where b > anyOtherVariable
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