How to create a global variable

Question

I have a global variable that needs to be shared among my ViewControllers   In Objective-C  I can define a static variable  but I can t find a way to define a global variable in Swift   Do you know of a way to do it

User · Answer

Global variables that are defined outside of any method or closure can be scope restricted by using the private keyword   import UIKit     MARK  Local Constants  private let changeSegueId    MasterToChange  private let bookSegueId      MasterToBook

User · Answer

From the official Swift programming guide      Global variables are variables that are defined outside of any   function  method  closure  or type context  Global constants and   variables are always computed lazily    You can define it in any file and can access it in current module anywhere  So you can define it somewhere in the file outside of any scope  There is no need for static and all global variables are computed lazily    var yourVariable    someString    You can access this from anywhere in the current module   However you should avoid this as Global variables are not good for application state and mainly reason of bugs   As shown in this answer  in Swift you can encapsulate them in struct and can access anywhere  You can define static variables or constant in Swift also  Encapsulate in struct  struct MyVariables       static var yourVariable    someString      You can use this variable in any class or anywhere  let string   MyVariables yourVariable println  Global variable   string       Changing value of it MyVariables yourVariable    anotherString

User · Answer

if you want to use it in all of your classes you can use   public var yourVariable    something    if you want to use just in one class you can use    var yourVariable    something

[swift] How to create a global variable?

Examples related to swift

Examples related to global-variables