But in case of struct instance constant - we have a problem:
struct A {
var x = 1
var y = 2
}
let a1 = A()
with (a1) {
print($0.x)
$0.y = 10
}
- this will be compiled without errors/warnings, but yes - there will be
runtime error. I'm sure this is not what we need from Swift. And so, this
"with" function can not be a 100% replacement for special language
construction. So, all, please provide your opinion on this proposal and I
believe we should move it forward.
On 13.04.2016 18:51, Erica Sadun via swift-evolution wrote:
On Apr 13, 2016, at 7:50 AM, Benzi via swift-evolution
<swift-evolution@swift.org <mailto:swift-evolution@swift.org>> wrote:
The closest right now you can achieve would be:
func with<T>(item:T, apply:(T)->Void) {
apply(item)
}
let label = UILabel()
label.highlighted // defaults to false
with(label) {
$0.highlighted = true
}
label.highlighted // is now true
As a reference type, you can just go ahead and assign:
letlabel = UILabel()
label.highlighted= true
-- E
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