swift - Custom protocols -

im getting error "class declaration cannot close on value 'viewcontainer' defined in outer scope"

i created procotol called networkresponse have 2 methods on sucessresponse , onerrorresponse.

then have class called callback extends networkresponse , forced implement methods.

here function :

 public func login (callback : callback, viewcontroller : uiviewcontroller) {            let callbackinstance: networkresponse = {              class callback : callback {                    override func onsucessresponse(response : nsdictionary){                      viewcontroller.dismiss(animated: true, completion: nil)                  }                 override func onerrorresponse(message : string, code : int){                     print("error")                 }             }              return callback()         }()          postpath(callback: callbackinstance as? callback)  } 

i want dismiss controller anonymous class.

any recomendation ?

no need define protocol , callback class. closure need.

import uikit  public class testinnerclass: uiviewcontroller {      public func login(successcallback: ((response: nsdictionary) -> void), errorcallback: ((message: string, code: int) -> void)) {          let success = false         let response = nsdictionary()          //         // make login request here, , change `success` value depends on response         // let response = ...         //         // if making async request login, put following codes inside request callback closure.         //          if success {             successcallback(response: response)         } else {             errorcallback(message: "error occurred", code: -1)         }     }      override public func viewdidload() {         super.viewdidload()          login({                 (response) in                 // called when success                 self.dismissviewcontrolleranimated(true, completion: nil)             }, errorcallback: ({                 // called when failed                 (message, code) in                 print(message)             }))     } } 

i have written sample codes case in github repo, , example using alamofire make network request, reference.

ps: since still using xcode 7.3.1, may need changes above code adopt swift 3 syntax requirement.