[swift-evolution] [swift-evolution-announce] [Review] SE-0099: Restructuring Condition Clauses

Xiaodi Wu 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
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.swift.org/pipermail/swift-evolution/attachments/20160531/8afed4b1/attachment.html>

More information about the swift-evolution mailing list