Swift 2.0 Perform http request and parse returned data

httprequest.playground

import Foundation
import XCPlayground

// Let asynchronous code run
XCPSetExecutionShouldContinueIndefinitely()

let url = NSURL(string: "http://www.reddit.com/.json")
let session = NSURLSession.sharedSession()

let task = session.dataTaskWithURL(url!, completionHandler: {
    (data, repsonse, error) -> Void in
    if (error != nil) {
        print(error)
    } else {
        do {
            let jsonResult = try NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.MutableContainers)
            
            if let resultObject = jsonResult as? NSDictionary {
                if let resultObjectData = resultObject["data"] as? NSDictionary {
                    if let resultObjectChildren = resultObjectData["children"] as? NSArray {
                        print(resultObjectChildren[0])
                    }
                }
            }
        } catch let error as NSError {
            print(error)
        }
    }
})

task.resume()