Access Control

Introduction

Problem

Prevent others from touching my code

Resources

import UIKit
class BobController: UIViewController {}

Learn how to create framework

• Create open source project

Open

• access and able to override within different module

Public

• access but not able to override within different module

Internal

• Access and override within the same module only

File Private

• Access and override within the same file

// random.swift
fileprivate func introduce() {
 print("Hello from the other side")
}

 // viewcontroller.swift
override func viewDidLoad() {
 super.viewDidLoad()
 introduce() // error
}

Private

• Access and override within the scope

// human.swift
class Human {
 private var name = "Bob"
}
Human() // Good
Human().name // Error

References

Conclusion