How to access data in Class globally in any ViewController in the project

Question

I am a newbie in Swift.

Objective: Access the data globally

How to use Swift to implement a global Temporary storage using below class to store data

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Answer 1

You can follow the step. How to set shared variable in Swift 3

1. Create a model file "TimetableModel.swift"

   import Foundation
   class TimetableModel {
       static let sharedInstance = TimetableModel()
       let categories:[Day]        
       var user_id = Int()
       // define any variable here
   }
   

2. After that create any controller

   import UIKit
   class TimetableVC: UIViewController {
       override func viewDidLoad() { // now you can access shared variable  
           TimetableModel.sharedInstance.categories[section].name    TimetableModel.sharedInstance.user_id
       }
   }