ios - set NSArray instance using reference in Swift -

i'm trying set values nsarray using reference in swift can't seem working.

var list = self.isfiltered ? self.filteredeventslist : self.eventslist self.sorttableviewforeventname(&list) 

then:

private func sorttableviewforeventname(inout eventarray: nsarray) {          let sortedevents = eventarray.sortedarrayusingcomparator({ (firstevent, secondevent) in              let firsteventname = (firstevent as! event).name             let secondeventname = (secondevent as! event).name              return firsteventname.compare(secondeventname)         })          eventarray = sortedevents     } 

the change in eventarray not reflect in eventslist or filteredeventslist, whichever may applicable.

you need have reason using inout parameters, , in case don't think have one. can have function return sorted array:

private func sorttableviewforeventname(eventarray: nsarray) -> nsarray {     let sortedevents = eventarray.sortedarrayusingcomparator({ (firstevent, secondevent) in          let firsteventname = (firstevent as! event).name         let secondeventname = (secondevent as! event).name          return firsteventname.compare(secondeventname)     })      return sortedevents } 

then say

var list = self.isfiltered ? self.filteredeventslist : self.eventslist list = self.sorttableviewforeventname(list) 

but, unless have reason using nsarray, can use swift array , gain type awareness/safety , more concise sorting:

private func sorttableviewforeventname(eventarray: [event]) -> [event] {     let sortedevents = eventarray.sort {         $0.name < $1.name     }     return sortedevents  }