[swift-evolution] Computed properties: get and set using shorthand notation?

[Jonathan Tang]

+1 for both.  I find that I use $0 enough in closures that I have no
problem remembering what it does, and being able to use it for setters
would save me a bunch of typing.

On Wed, Feb 3, 2016 at 2:24 PM, Jessy Catterwaul via swift-evolution <
swift-evolution at swift.org> wrote:

> If functions start using shorthand argument names, I would probably feel
> more comfortable with it. Is that being discussed?
>
> On Feb 3, 2016, at 5:22 PM, T.J. Usiyan <griotspeak at gmail.com> wrote:
>
> +1 for both. I don't think that I would prefer the $0 syntax in most cases
> but I would appreciate making the syntax more consistent.
>
> TJ
>
> On Wed, Feb 3, 2016 at 5:08 PM, Jessy Catterwaul via swift-evolution <
> swift-evolution at swift.org> wrote:
>
>> +1 on implicit return
>> -1 on $0; I like newValue more than it.
>>
>> I also think the return *type* should be implicit.
>>
>> On Feb 3, 2016, at 5:00 PM, Chris Liscio via swift-evolution <
>> swift-evolution at swift.org> wrote:
>>
>> Why can’t we use shorthand argument names and implicit returns when
>> specifying the get and set blocks in a computed property? I.e., Why must we
>> refer to newValue in the implementation of set, and not $0 like we do in
>> closures? Also, why do we need ‘return’?
>>
>> Once you get used to the shorthand, you kinda want to use it all over…
>>
>> This question came up recently when I was writing a façade for another
>> class, and would have liked to written something like the following:
>>
>> class Façade {
>>   private var _wrapped: Something
>>
>>   var wrappedProperty: Int {
>>     get { _wrapped.property }
>>     set { _wrapped.property = $0 }
>>   }
>>
>>   var multipliedProperty: Int { _wrapped.property * 42 }
>> }
>>
>> I apologize if this has already been discussed/requested before. I
>> searched the archives and didn’t turn up anything that referred to this
>> specifically.
>>
>> Thanks!
>>
>> Chris Liscio
>> http://supermegaultragroovy.com
>> Learn _your_ music with Capo: http://capoapp.com
>>
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>
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