See the function 'postRequest' in this UserModel class I have defined. Well the function is not used anymore anywhere and when I try to remove it XCode syntax highlighting crashes and my program will not compile with a segmentation fault error 11 which points to nowhere.
I moved the function into a struct called SharedModel. So this function is not called anywhere! Why can I not remove it from the file? It makes no sense, I just want to remove an unused function. But Xcode keeps crashing and it makes me keep it! What is going on.
import Foundation
import SwiftHTTP
import SwiftyJSON
public enum UserProperties : String {
    case user_id = "user_id", single_access_token = "single_access_token", first_name = "first_name",
    last_name = "last_name", role = "role", email = "email", username = "username", barn_id = "barn_id",
    location_id = "location_id", farm_id = "farm_id"
    static let allValues = [user_id, single_access_token, first_name, last_name, role, email, username, barn_id, location_id, farm_id]
}
class UserModel {
    var userPropertiesJSON: JSON?
    init () {
    }
    func postRequest(url: String, params: Dictionary<String,AnyObject>, completionHandler: (JSON?) -> ()) {
        var request = HTTPTask()
        request.requestSerializer = JSONRequestSerializer()
        //The expected response will be JSON and be converted to an object return by NSJSONSerialization instead of a NSData.
        request.responseSerializer = JSONResponseSerializer()
        //we have to add the explicit type, else the wrong type is inferred. See the vluxe.io article for more info.
        //let params: Dictionary<String,AnyObject> = ["username": username, "password": password]
        request.POST(url, parameters: params, success: {(response: HTTPResponse) in
            println(response.responseObject!)
            let json = JSON(response.responseObject!)
            completionHandler(json)
            },failure: {(error: NSError, response: HTTPResponse?) in
                completionHandler(false)
        })
    }
    func login(username: String, password: String, completionHandler: (Bool) -> ()) {
        let params: Dictionary<String,AnyObject> = ["username": username, "password": password]
        SharedModel.postRequest("http://farmcentral.softimum.com/user_sessions.json", params: params) { jsonOrError in
            if let json: JSON = jsonOrError {
                self.userPropertiesJSON = json
                SharedModel.userPropertiesJSON = json
                completionHandler(true)
            } else {
                completionHandler(false)
            }
        }
    }
}
UPDATE
Still and issue but I have narrowed it down to the exact line of code that if removed causes xcode to crash and causes the build to stop compiling due to a segment fault 11 error.
This is the offending line: let json = JSON(response.responseObject!)
This line is in the function inside the closure. When I remove this line Xcode crashes. I am running cocoapods beta version, this might be a bug.
