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iOS 17 Programming for Beginners

iOS 17 Programming for Beginners

By : Ian Lockett, Ahmad Sahar
4.6 (21)
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iOS 17 Programming for Beginners

iOS 17 Programming for Beginners

4.6 (21)
By: Ian Lockett, Ahmad Sahar

Overview of this book

In a world with nearly 2 million apps on the App Store, the demand for skilled iOS developers has never been higher. "iOS 17 Programming for Beginners, Eighth Edition" is your gateway to this lucrative and dynamic field. This hands-on guide is tailored for those who are new to iOS and takes you on a journey from learning the Swift language to crafting your own app and seeing it thrive on the App Store. Our approach is hands-on and practical. Each chapter is designed to be a stepping stone in your development journey, providing step-by-step tutorials, real-life examples, and clear explanations of complex concepts. As you progress, you'll not only be skilled in Swift but also incorporate cutting-edge technologies into your apps. You'll learn how to publish your creations and harness the power of iOS 17 through a straightforward and easy to program example app divided into manageable parts. By the time you've completed this book, you'll possess the skills and knowledge to not only develop and publish captivating apps but also leverage online resources to continually enhance your app development prowess.
Table of Contents (34 chapters)
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1
Part 1: Swift
11
Part 2: Design
16
Part 3: Code
26
Part 4: Features
32
Other Books You May Enjoy
33
Index

Exploring extensions

Extensions allow you to provide extra capabilities to an object without modifying the original object definition. You can use them on Apple-provided objects (where you don’t have access to the object definition) or when you wish to segregate your code for readability and ease of maintenance. Here’s what an extension looks like:

class ExistingType {
   property1
   method1()
}
extension ExistingType : ProtocolName {
   property2
   method2()
}

Here, an extension is used to provide an additional property and method to an existing class.

Let’s look at how to use extensions. You’ll start by making the Sauce enumeration conform to the CalorieCount protocol using an extension in the next section.

Adopting a protocol via an extension

At present, the Sauce enumeration does...

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