Book Image

Mastering iOS 12 Programming - Third Edition

By : Donny Wals
Book Image

Mastering iOS 12 Programming - Third Edition

By: Donny Wals

Overview of this book

The iOS development environment has significantly matured, and with Apple users spending more money in the App Store, there are plenty of development opportunities for professional iOS developers. However, the journey to mastering iOS development and the new features of iOS 12 is not straightforward. This book will help you make that transition smoothly and easily. With the help of Swift 4.2, you’ll not only learn how to program for iOS 12, but also how to write efficient, readable, and maintainable Swift code that maintains industry best practices. Mastering iOS 12 Programming will help you build real-world applications and reflect the real-world development flow. You will also find a mix of thorough background information and practical examples, teaching you how to start implementing your newly gained knowledge. By the end of this book, you will have got to grips with building iOS applications that harness advanced techniques and make best use of the latest and greatest features available in iOS 12.
Table of Contents (35 chapters)
Title Page
Copyright and Credits
Packt Upsell

Chapter 1

  1. What happens if you don't provide a reason for wanting to access a user's contacts?

c) The app crashes.

  1. What is a reuse-identifier on a table view cell used for? 

c) It is used by the table view to optimize performance.

  1. Where does a table view obtain information about the cells it displays from

b) UITableViewDataSource.

  1. How does a table view make sure to keep its memory footprint as small as possible?

b) It reuses cells that were displayed before.

  1. What is a placeholder cell called in Interface Builder?

a) Prototype cell.

  1. What is a connection between an Interface Builder item and a variable in code called

c) @IBOutlet.

  1. Where is the best place to reset a table view cell?

c) In prepareForReuse().