[swift-evolution] What about a VBA style with Statement?

[Vladimir.S]

+1 on statement vs lexical scope. additionally { $0.something ... } is more 
explicit than just .something.

On 13.04.2016 17:36, Taras Zakharko via swift-evolution wrote:
> We had this kind of proposal earlier, didn’t seem to be very well received. I still think it would be a useful thing, but I’d do it as a statement (extension of do) that introduces new lexical  scope (similar to self)
>
> — Taras
>
>> On 13 Apr 2016, at 16:25, Sean Heber via swift-evolution <swift-evolution at swift.org> wrote:
>>
>> This pair works pretty well, too, if you don’t mind free functions:
>>
>> func with<T>(inout this: T, @noescape using: inout T->Void) { using(&this) }
>> func with<T>(this: T, @noescape using: T->Void) { using(this) }
>>
>> It works either with classes or mutable structs if you call it correctly and the type doesn’t matter.
>>
>> l8r
>> Sean
>>
>>
>>> On Apr 13, 2016, at 9:17 AM, Radosław Pietruszewski via swift-evolution <swift-evolution at swift.org> wrote:
>>>
>>> It can be (more-or-less) solved in library code today:
>>>
>>> extension NSObjectProtocol {
>>>     public func with(@noescape fn: Self -> Void) -> Self {
>>>         fn(self)
>>>         return self
>>>     }
>>> }
>>>
>>> This way, you can do, on NSObjects:
>>>
>>> textLabel.with {
>>> 	$0.textAlignment = .Left
>>> 	$0.textColor = .darkTextColor()
>>> }
>>>
>>> I love this pattern.
>>>
>>> You can also make it a function to make it work with any value of any kind (it will then take form of `with(foo) { …}`).
>>>
>>> Ideally, if you could write a universal extension (something like `extension Any`), you could just add this behavior, with method syntax, to everything.
>>>
>>> — Radek
>>>
>>>> On 13 Apr 2016, at 15:15, 李海珍 via swift-evolution <swift-evolution at swift.org> wrote:
>>>>
>>>> I recently learned some VBA and I found a very conveniently `with` statement.
>>>>
>>>> `with` statement can be helpful to set property for UIKit instance.
>>>>
>>>> for instance a UILabel instance `textLabel` ,with `with` statement we can set UILabel property like this
>>>>
>>>>
>>>>
>>>> ```swift
>>>>
>>>> with textLabel{
>>>>
>>>> .textAlignment = .Left
>>>>
>>>> .textColor = UIColor.darkTextColor()
>>>>
>>>> .font = UIFont.systemFontOfSize(15)
>>>>
>>>> }
>>>>
>>>> ```
>>>>
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