Swift Error Editor placeholder in source file

Question

Hello I am implementing a graph data structure  When I try to build the application the I get the error  Editor placeholder in source file   The full graph implementation was pulled from WayneBishop s GitHub from here https   github com waynewbishop SwiftStructures  class Path    var total  Int  var destination  Node var previous  Path   init          Error happens on next line     destination   Node key  String   neighbors   Edge    visited  Bool  lat  Double  long  Double             I changed the Node Class around to   public class Node   var key  String  var neighbors   Edge   var visited  Bool   false var lat  Double var long  Double  init key  String   neighbors   Edge    visited  Bool  lat  Double  long  Double        self neighbors    Edge                 This Error happens 5 times throughout the code that I have built so far  Also this question has been asked  but not answered   I think the error may be due to my changes to the init   in the Node class  Prior to my changes it was just init    If it is  how can I add objects to the class  Pardon me if I am not correct in my programming terminology  as I am relatively new to OOP

User · Answer

Go to Product   Clean Build Folder

User · Answer

Sometimes  XCode does not forget the line which had an  Editor Placeholder  even if you have replaced it with a value  Cut the portion of the code where XCode is complaining and paste the code back to the same place to make the error message go away  This worked for me

User · Answer

After Command   Shift   B  the project works fine

User · Answer

Error is straight forward and its because of wrong placeholders you have used in function call  Inside init you are not passing any parameters to your function  It should be this way  destination   Node  some key   neighbors   edge1   edge2   visited  true  lat  23 45  long  45 67     fill up with your dummy values   Or you can just initialise with default method   destination   Node     UPDATE  Add empty initialiser in your Node class  init

User · Answer

you had this  destination   Node key  String   neighbors   Edge    visited  Bool  lat  Double  long  Double    which was place holder text  above you need to insert some values  class Edge      public class Node     var key  String    var neighbors   Edge    var visited  Bool   false   var lat  Double   var long  Double    init key  String   neighbors   Edge   visited  Bool  lat  Double  long  Double        self neighbors    Edge        self key   key     self visited   visited     self lat   lat     self long   long         class Path      var total  Int    var destination  Node   var previous  Path     init        destination   Node key      neighbors      visited  true  lat  12 2  long  22 2

User · Answer

Clean Build folder   Build  will clear any error you may have even after fixing your code

User · Answer

If you have this error while you create segues with the view controllers not with the UI elements you have to change sender  Any  to this    IBAction func backButtonPressed   sender  Any            performSegue withIdentifier   goToMainScreen   sender  self           It will work

[ios] Swift Error: Editor placeholder in source file

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