> On Aug 14, 2015, at 3:44 PM, Rick Mann <[email protected]> wrote:
>
> What is the type of "self" in the initializer closure,
Wow, I didn’t even think you could use ‘self’ in such a context, since you’re
not inside a method, just a closure. But it looks as though ‘self’ has type
'MyDelegate -> () -> MyDelegate’, according to the error message you got. I
can’t remember the associativity of ‘->’; it seems something like a function
that takes a MyDelegate and returns a function that returns a MyDelegate? Weird.
> and is there a way to refer to the enclosing class instance? I also had
> trouble locating this in the Swift 2 guide, if it's there at all.
No, I don’t think you can access the instance that the variable is going to be
assigned to.
> I can do it with a separate member function and call that in the initializer,
> but that introduces a lot of boilerplate, as well as creating a method I
> don't intend to ever be called separately.
Why wouldn’t you just move the body of that closure into your init method?
Something like
func init() {
let config =
NSURLSessionConfiguration.backgroundSessionConfigurationWithIdentifier("myident")
backgroundSession = NSURLSession(configuration: config,
delegate: self, delegateQueue: nil)
}
(And looking at the code more closely, are you really sure you want to create
an NSURLSession for every instance of MyDelegate? Usually NSURLSession is a
singleton, or at most you’d have a handful of them.)
—Jens
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