Parse response

Alamofire.swift

    private class func parseResponse(response: Response<AnyObject, NSError>, success: (request: NSURLRequest?, response: NSHTTPURLResponse?, json: [NSObject: AnyObject]?) -> (),
        failure: (request: NSURLRequest?, response: NSHTTPURLResponse?, error: NSError?) -> ()) {
            switch (response.result) {
            case .Success(let json):
                if let json = json as? [NSObject: AnyObject] {
                    success(request: response.request, response: response.response, json: json)
                } else {
                    success(request: response.request, response: response.response, json: [NSObject: AnyObject]())
                }
            case .Failure(let error):
                failure(request: response.request, response: response.response, error: error)
            }
    }