Not surprisingly, Xcode is able to autocomplete the parameters to the separate
function.
Here’s my whole routine:
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
let config = NSURLSessionConfiguration.defaultSessionConfiguration()
let url = NSURL(string: "http://www.somewebservice
<http://www.somewebservice/>.com")
let session = NSURLSession(configuration: config)
let request = NSURLRequest(URL: url!)
var task = session.dataTaskWithRequest(request) {
data, response, error in
let httpResponse = response as! NSHTTPURLResponse
if httpResponse.statusCode == 200 {
let teams: AnyObject? =
NSJSONSerialization.JSONObjectWithData(data, options:
NSJSONReadingOptions.AllowFragments, error: nil)
println(teams)
}
}
task.resume()
}
Paste this into a new project, and click after the “in” and see if Xcode
recognizes “data”, “response”, or “error” when you start typing. Oddly, after
you enter the keyword, you can option-click to have Xcode show you the correct
type, and typing a “.” will give you the autocomplete popup.
Thanks.
> On Mar 9, 2015, at 7:00 PM, LCS <[email protected]> wrote:
>
> Hello...
>
> There doesn’t seem to be anything wrong with your line of code, but there
> could be a problem somewhere else (or with how/where you’re writing the code
> for the completion handler block).
>
> I’ve run into problems a few times where the compiler didn’t report errors
> properly or gave cryptic error messages, but I was usually able to figure out
> my mistake by breaking out the offending line into individual statements so
> that I got a better error message from the compiler (except for one time,
> where a mistake in declaring a function compiled cleanly and then later on
> segfaulted the compiler when it was called; 19437380).
>
> To isolate the problem, I’d try declaring the completion handler function
> separately and then pass in the function.
>
> func testHandler(myData: NSData!, myResponse: NSURLResponse!, myError:
> NSError!) -> Void
> {
> // try your handler code here
>
> }
>
> let task = session.dataTaskWithRequest(request, completionHandler:
> testHandler)
>
> If Xcode accepts your handler code that way and accepts the function as a
> parameter, you might have a mistake in how you’re adding your handler code to
> the inline closure in the line you posted. If you post the code showing how
> you are adding the handler code to the original line you posted, we could
> rule that out.
>
> Louis
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