How to use NSURLSessionDataTask in Swift [closed]

It's unclear what you're asking, but I noticed that you have a couple of errors in the code:

1. You should create your session using NSURLSession(configuration: config)

2. session.dataTaskWithRequest returns a NSURLSessionDataTask, so there's no need to wrap it inside NSURLSessionDataTask() (a.k.a instantiating a new NSURLSessionDataTask object).

3. The completion handler is a closure and here's how you create that particular clousure:

   {(data : NSData!, response : NSURLResponse!, error : NSError!) in
   
       // your code
   
   }
   

Here's the updated code:

let url = NSURL(string: "https://itunes.apple.com/search?term=\(searchTerm)&media=software")
let request = NSURLRequest(URL: url)
let config = NSURLSessionConfiguration.defaultSessionConfiguration()
let session = NSURLSession(configuration: config)

let task = session.dataTaskWithRequest(request, completionHandler: {(data, response, error) in

    // notice that I can omit the types of data, response and error

    // your code

});

// do whatever you need with the task e.g. run
task.resume()

If you have problems with completion syntax, you can create function for completion before calling dataTaskWithRequest(..) to make it clearer

func handler (data: NSData!, response: NSURLResponse!, error: NSError!) {
            //handle what you need
        }

session.dataTaskWithRequest(request, completionHandler: handler)