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

[Chris Lattner]

> On May 28, 2016, at 12:07 PM, Thorsten Seitz <tseitz42 at icloud.com> wrote:
> 
> What about requiring `let` before each binding and `case` before each pattern?
> 
> guard case let x = a, case let y = b, let z = c, x == y else { … }
> 
> Now `let z = c` can only be a let-binding and not a pattern matching clause.

Yes, that would be enough to solve the ambiguity.  The problem with that is that it eliminates a commonality with var/let declarations, which can declare multiple variables.

-Chris