ios - accessing variables created in the override func viewDidLoad() { super.viewDidLoad() function outside that function in swift - 


import uikit  class secondviewcontroller: uiviewcontroller {      @iboutlet weak var labela: uilabel!     @iboutlet weak var labelb: uilabel!       var datapassed:string!     var seconddatapassed:string!     var newvar: string!     var newvar2: string!      override func viewdidload() {         super.viewdidload()         labela.text = datapassed         labelb.text = seconddatapassed         newvar = labela.text          println(newvar)     }    println(newvar) *** can't access newvar outside override func viewdidload() { - gives "expected declaration" driving me crazy!!!***      override func didreceivememorywarning() {         super.didreceivememorywarning()         // dispose of resources can recreated.     }  }

is there data in datapassed? if don't assign string datapassed variable, , assign newvar datapassed, newvar have nothing print.

try:

    import uikit     class secondviewcontroller: uiviewcontroller {     @iboutlet weak var labela: uilabel!     @iboutlet weak var labelb: uilabel!       var datapassed:string! = "test."     var seconddatapassed:string!     var newvar: string!     var newvar2: string!      override func viewdidload() {         super.viewdidload()         labela.text = datapassed         labelb.text = seconddatapassed         newvar = labela.text          println(newvar)     }

secondly, appears you're trying println again outside of function. isn't going work, because viewdidload "main method" of app. can create other functions respond button touches, etc... , run println there, because swift code executed functionally, code you're executing has inside of particular function. while can declare variables, have, can't perform actions such printing them outside of function, because there's no order/method madness.

the place can run swift code on standalone basis without functions in swift playground. in xcode can select file -> new -> playground try out.


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