ios - how to initialize methods in a UIViewController inside of a viewDidLoad method -

there method creating data. method needs called once. structure:

var datacreated : bool? = false    override func viewdidload() {     super.viewdidload()      if datacreated! == false {         createdata()         self.datacreated = true     } } 

is right way ensure createdata() method called once? thank you.

since want createdata called once per instance of view controller, using viewdidload place call it. further, since viewdidload called once per instance of view controller, there no need datacreated property. can remove that.

override func viewdidload() {     super.viewdidload()      createdata() } 

another option call createdata init method of view controller. depends on createdata needs access. if createdata method needs access views , outlets, must use viewdidload.