ios - ViewController Type does not have member named -

i searched similar questions none seemed answer issue. making single view app. in class viewcontroller: uiviewcontroller section have following code:

var lasttoact = 0  var gamestarted = false  var tempplayer = baseplayer()  var positionnumber : int = 0  var stringposnum : string = string(positionnumber)  var stringfrominteger : string = "\(string(positionnumber))" 

the first 5 variables no error 6th , 7th ones viewcontroller type' not have member named' positionnumber last 2 variables. don't know why is.

var stringposnum : string = string(positionnumber) 

the problem stored instance variable default value depends on value of another instance variable. can't that, because @ instantiation time, when default value applied, there no other instance variables, because there no instance yet — instance in middle of creating.

one solution: put lazy in front of declaration. solution: if variable have relation other instance variable, make computed variable instead of stored variable.