ios - Retrieve Random String from Core Data in Swift -

i've searched answer have come empty handed. reason i'm drawing blank on how retrieve random entry core data string attribute. have else working - create, update, delete... can't seem handle on getting random entry stack.

feeling confused on this. here code table view controller manages core data.

import uikit import coredata  class taskmanagerviewcontroller: uitableviewcontroller, nsfetchedresultscontrollerdelegate {      let managedobjectcontext = (uiapplication.sharedapplication().delegate appdelegate).managedobjectcontext      var fetchedresultcontroller: nsfetchedresultscontroller = nsfetchedresultscontroller()      override func viewdidload() {         super.viewdidload()          fetchedresultcontroller = getfetchedresultcontroller()         fetchedresultcontroller.delegate = self         fetchedresultcontroller.performfetch(nil)     }      override func prepareforsegue(segue: uistoryboardsegue, sender: anyobject!) {         if segue.identifier == "edit" {             let cell = sender uitableviewcell             let indexpath = tableview.indexpathforcell(cell)             let taskcontroller:taskdetailviewcontroller = segue.destinationviewcontroller taskdetailviewcontroller             let task:tasks = fetchedresultcontroller.objectatindexpath(indexpath!) tasks             taskcontroller.task = task         }     }       func getfetchedresultcontroller() -> nsfetchedresultscontroller {         fetchedresultcontroller = nsfetchedresultscontroller(fetchrequest: taskfetchrequest(), managedobjectcontext: managedobjectcontext!, sectionnamekeypath: nil, cachename: nil)         return fetchedresultcontroller     }      func taskfetchrequest() -> nsfetchrequest {         let fetchrequest = nsfetchrequest(entityname: "tasks")         let sortdescriptor = nssortdescriptor(key: "desc", ascending: true)         fetchrequest.sortdescriptors = [sortdescriptor]         return fetchrequest     }      override func didreceivememorywarning() {         super.didreceivememorywarning()         // dispose of resources can recreated.     }      // #pragma mark - table view data source      override func numberofsectionsintableview(tableview: uitableview) -> int {         let numberofsections = fetchedresultcontroller.sections?.count         return numberofsections!     }      override func tableview(tableview: uitableview, numberofrowsinsection section: int) -> int {         let numberofrowsinsection = fetchedresultcontroller.sections?[section].numberofobjects         return numberofrowsinsection!     }      override func tableview(tableview: uitableview, cellforrowatindexpath indexpath: nsindexpath) -> uitableviewcell {             var cell = tableview.dequeuereusablecellwithidentifier("cell", forindexpath: indexpath) uitableviewcell             let task = fetchedresultcontroller.objectatindexpath(indexpath) tasks             cell.textlabel.text = task.desc             return cell     }       override func tableview(tableview: uitableview, commiteditingstyle editingstyle: uitableviewcelleditingstyle, forrowatindexpath indexpath: nsindexpath) {         let managedobject:nsmanagedobject = fetchedresultcontroller.objectatindexpath(indexpath) nsmanagedobject         managedobjectcontext?.deleteobject(managedobject)         managedobjectcontext?.save(nil)     }      func controllerdidchangecontent(controller: nsfetchedresultscontroller!) {         tableview.reloaddata()     } } 

this code delivered results looking for:

(i'm new @ stack overflow not sure how select correct answer here.)

func randomtask() -> tasks {          let count = uint32(fetchedresultcontroller.fetchedobjects!.count)         let index = int(arc4random_uniform(count))         var results = fetchedresultcontroller.fetchedobjects![index] tasks         answerlabel.text = results.valueforkey("desc") nsstring         return results     }