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
Dedication
Packt Upsell
Contributors
Preface
Index

Questions


  1. Which devices support HealthKit?

a) The iPhone and iPad. b) The iPhone, iPad, and Apple Watch. c) The iPhone and Apple Watch.

  1. What's the difference between a quantity sample and a category sample?

a) Quantity samples have an arbitrary value, while categories use enums to represent their value. b) Quantity samples take place over time, and category samples are static. c) Category samples have more possibilities than quantity samples.

  1. How can you check whether you have read access to a certain health metric?

a) By requesting the authorization status for that metric. b) By making a request. If the results are empty, you don't have access. c) To protect the user's privacy, there is no way to be sure.

  1. How can you filter data that is returned from a HealthKit query?

a) With predicates b) By using the built-in filters c) By specifying the values you want to fetch

  1. What permissions do you need to use a workout route builder?

a) Only for workouts. b) Just for the workout route builder. c) You need...