[swift-evolution] Making capturing semantics of local

[Mike Kluev]

On 27 October 2017 at 00:45, Howard Lovatt <howard.lovatt at gmail.com> wrote:


> Rather than expand local function syntax why not deprecate local functions
> completely
>

a cautious +0.5. local functions do not add that much value as one would
hope and beyond what's already discussed above, unfortunately break one
major programming guideline: "keep functions short" (*). the following two
fragments are not too different:

<<<<<<<<<<<<<<
func foo() {

let animations = {
self.view.alpha = 0.5 // self needed
}

UIView.animate(withDuration: 1, animations: animations) {
self.variable = 1 // self needed
print("completed")
}
}
==============
func foo() {

func animations() {
view.alpha = 0.5 // can do without self...
}

func completion(_ : Bool) {
variable = 1 // can do without self...
print("completed")
}
UIView.animate(withDuration: 1, animations: animations, completion:
completion)
}
>>>>>>>>>>>>>>>

(*) - closures break the  "keep functions short" guideline as well :)

Mike
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