why don't i see the option for dataWithContentsOfURL ?

ah thank you! i have done the changes that are provided but it still doesn't work, its saying 'fatal error: unexpectedly found nil while unwrapping an Optional value' in my console.

luke telford, could you please post the code you currently have, thanks.

yea sure,

import UIKit

class ViewController: UIViewController {

    private let apiKey = "8090fe1c97efed622a3b44f9f777ed7c"

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.

        let baseURL = NSURL(string: "https://api.forecast.io/forecast/\(apiKey)/")
        let forecastURL = NSURL(string: "53.819912, -1.477529", relativeToURL: baseURL)

        let weatherData = NSData(contentsOfURL: forecastURL!, options: nil, error: nil)
        println(weatherData)
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }



}

Hi luke telford,

The reason you're getting a nil error is because you have a space in your coordinates which has caught quite a number of users of guard as NSURL objects don't like spaces unless they're encoded which we don't need to do here so we can simply remove it.

let forecastURL = NSURL(string: "53.819912,-1.477529", relativeToURL: baseURL)

Ah something so simple! it now runs but its returning nil in my command line where as Pasan's return a long Hex value, is this normal with the changes that have happened in Xcode or should i be also get a Hex value?

I just tried your code and it worked fine, sometimes the simulator can have issues with HTTP requests, I would suggest you reset it via the Reset Content and Settings menu item under iOS Simulator as seen below.

ah i see, i have done that and although I'm still getting nil as an output in my console the app itself runs with no error popping up

I just downloaded the files from the course and its giving me the same error on mine so I'm guessing something has changed in Xcode? its saying "Value of optional type 'NSURL?' not unwrapped, did you mean to use '!' or '?'?

this is the line of code giving me this error

let downloadTask: NSURLSessionDownloadTask = sharedSession.downloadTaskWithURL(forecastURL, completionHandler: { (location: NSURL!, response: NSURLResponse!, error: NSError!) -> Void in