Re: Swift: Any way to extract the bound "self" from a closure?
Re: Swift: Any way to extract the bound "self" from a closure?
- Subject: Re: Swift: Any way to extract the bound "self" from a closure?
- From: Kyle Sluder <email@hidden>
- Date: Fri, 24 Oct 2014 17:57:40 -0700
On Oct 24, 2014, at 5:24 PM, Rick Mann <email@hidden> wrote:
>
> I discovered a neat property of Swift: Anywhere I can pass a closure, I can also pass a object method (of matching type), and if I reference it from an instance, it captures that instance for the call:
>
> class
> Foo
> {
> func actOnFoo(inValue: Int)
> {
> }
> }
>
> func
> neato()
> {
> var foo: Foo = Foo();
> doSomething(foo.actOnFoo);
> }
>
> func
> doSomething(inFunc: (Int) -> ())
> {
> }
>
> Inside doSomething(), is it possible to get at inFunc's "self" (in this case, it would be foo)?
Imagine there were a keyword that allowed this. What would it evaluate to if the caller *didn’t* pass in a method, but rather a pure closure?
--Kyle Sluder
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