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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

Functions and Closures

At this point, you can write reasonably complex programs that can make decisions and repeat instruction sequences. You can also store data for your programs using collection types. As the programs you write grow in size and complexity, it will become harder to comprehend what they do.

To make large programs easier to understand, Swift allows you to create functions, which let you combine several instructions together and execute them by calling a single name. You can also create closures, which let you combine several instructions together without a name and assign them to a constant or variable.

By the end of this chapter, you’ll have learned about functions, nested functions, functions as return types, functions as arguments, and the guard statement. You’ll also have learned how to create and use closures.

The following topics will be covered in this chapter:

  • Exploring functions
  • Exploring closures

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