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| import Foundation | |
| typealias JSON = AnyObject | |
| typealias JSONDict = Dictionary<String, JSON> | |
| typealias JSONArray = Array<JSON> | |
| struct User { | |
| let id: Int | |
| let name: String | |
| let email: String | |
| } | |
| final class Box<A> { | |
| let value: A | |
| init(_ value: A) { | |
| self.value = value | |
| } | |
| } | |
| enum Result<A> { | |
| case Error(NSError) | |
| case Value(Box<A>) | |
| } | |
| func makeRequest() { | |
| println("makeRequest called") | |
| let url = NSURL(string: "http://104.131.48.79/api/user/test") | |
| getUser(url) { result in | |
| switch result { | |
| case let .Value(boxedValue): | |
| println(".Value") | |
| let user = boxedValue.value | |
| println("id: \(user.id) \nname: \(user.name) \nemail: \(user.email)") | |
| case let .Error(error): | |
| println(error) | |
| } | |
| } | |
| } | |
| func getUser(url: NSURL?, callback: (Result<User>) -> ()) { | |
| let request = NSURLRequest(URL: url!) | |
| let session = NSURLSession.sharedSession() | |
| let queue = NSOperationQueue.mainQueue() | |
| var response: AutoreleasingUnsafeMutablePointer<NSURLResponse?> = nil | |
| var error: NSError? | |
| var responseData = NSURLConnection.sendSynchronousRequest(request, returningResponse: response, error: &error) as NSData! | |
| println("getUser task started") | |
| if error != nil { | |
| callback(Result.Error(error!)) | |
| return | |
| } | |
| var jsonErrorOpt: NSError? | |
| let jsonOptional: JSON! = NSJSONSerialization.JSONObjectWithData(responseData!, options: NSJSONReadingOptions.MutableContainers, error: &jsonErrorOpt) | |
| if jsonErrorOpt != nil { | |
| callback(Result.Error(jsonErrorOpt!)) | |
| return | |
| } | |
| if let json = jsonOptional as? JSONDict { | |
| if let id = json["id"] as AnyObject? as? Int { | |
| if let name = json["name"] as AnyObject? as? String { | |
| if let email = json["email"] as AnyObject? as? String { | |
| let user = User(id: id, name: name, email: email) | |
| callback(.Value(Box(user))) | |
| return | |
| } | |
| } | |
| } | |
| } | |
| // if we couldn't parse all the properties then send back an error | |
| callback(.Error(NSError())) | |
| println("getUser task called") | |
| } | |
| makeRequest() | |
| println("End of execution") | |
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