ios - Update CoreData Object -

i'd update coredata object. backgrund: made app includes uitableview. in textlabel of uitableviewcell name. in detailtextlabel of cell date can changed/updated. i'd change date.

i wrote following code:

 var people = [nsmanagedobject]()    func savedate(date: nsdate) {        //1       let appdelegate = uiapplication.sharedapplication().delegate appdelegate       let managedcontext = appdelegate.managedobjectcontext!        //2       let entity =  nsentitydescription.entityforname("person", inmanagedobjectcontext:managedcontext)       let person = people[dateindexpath.row]        //3       person.setvalue(date, forkey: "datum")        //4       var error: nserror?       if !managedcontext.save(&error) {           println("could not save \(error), \(error?.userinfo)")       }        //5       people.append(person)       tableview.reloaddata()  } 

now, if run code: date updated cell in date has been updated displayed 2 times. example if added 3 cells , changed date in 3rd cell, 4 cells displayed , 2 of them have same content/are duplicated.

does knows how solve problem?

you're adding additional object array each time. updated person in array , display new information when reload table data. fix this, take out line:

people.append(person)