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iOS Swift Closures Closures in iOS Using a Closure

Wouter Bouma
Wouter Bouma
3,229 Points
Posted by Wouter Bouma
Wouter Bouma
3,229 Points

downloadTask does not compile

I entered (like in the video) let session = NSURLSession(configuration: NSURLSessionConfiguration.defaultSessionConfiguration()) let url = NSURL(string: "http://blog.teamtreehouse.com/api/get_recent_summary/?count=20") let request = NSURLRequest(URL: url!)

let downloadTask = session.downloadTaskWithRequest(request, completionHandler: {(url: NSURL!, response: NSURLResponse!, error: NSError!) -> Void in

// Execute the body of the closure

})

I get the error: (NSURL!, NSURLResponse!, NSError!) ->Void is not convertible to (NSURL?, NSURLResponse?, NSError?) -> Void

Some unwrapping going wrong? Please help me out.

Thanks.

BTW: I am using the latest version of Xcode/Swift

Tukang Keboen
Tukang Keboen
2,840 Points
Tukang Keboen
Tukang Keboen
2,840 Points

since swift 2: ! change to ?

try this 

 (request, completionHandler: { (url: NSURL?, response: NSURLResponse?, error: NSError?) -> Void in} )