On 26.04.2016 9:38, Goffredo Marocchi via swift-evolution wrote:
>
> Agreed, the exception for the parameter list in a closure declaration
> should be gone too potentially, I do not see a very convincing case why we
> should keep it. Does it solve some particular problem now in its current
form?
Probably support. If we want to be clear about if parameter list is a tuple
or it is a list of values i.e. (Int,Int) -> Void vs ((Int,Int)) -> Void ,
IMO we should be also clear about parameter list in a closure declaration..
But it seems right now it is not just about syntax:
func z1(block: (Int,Int) -> Void) {
block(1,2)
}
z1 { x, y in print(x,y)} // ok
z1 { x in print(x.0, x.1)} // what??
z1 { (x, y) in print(x, y)} // .. probably ok..
func z2(block: ((Int,Int)) -> Void) {
block((1,2))
}
z2 { x, y in print(x,y)} // why ??
z2 { x in print(x.0, x.1)} // ok
z2 { (x, y) in print(x, y)} // hm.. ?
//z2 { ((x, y)) in print(x, y)} // compilation error
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