[swift-evolution] Proposal: Always flatten the single element tuple

[Adrian Zubarev]

Well please no:


 let fn2: ((Int, Int)) -> Void = { lhs, rhs in }

Instead use destructuring sugar pitched by Chris Lattner on the other thread:

let fn2: ((Int, Int)) -> Void = { ((lhs, rhs)) in }

That’s a correct error:

let fn3: (Int, Int) -> Void = { _ in }
This should be allowed, because we might want to work with the whole tuple and not a desctructured elements only:

let fn4: ((Int, Int)) -> Void = { tuple in }


-- 
Adrian Zubarev
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