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  • Book Overview & Buying Mastering Swift 6
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Mastering Swift 6

Mastering Swift 6 - Seventh Edition

By : Jon Hoffman
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Mastering Swift 6

Mastering Swift 6

5 (2)
By: Jon Hoffman

Overview of this book

This seventh edition of Mastering Swift 6 is your ultimate guide to harnessing the full power of Swift. Whether you're aiming to optimize the performance of your applications or looking to explore the exciting new features in Swift 6.2, this book has you covered. The author distills his 28 years of experience in the Engineering and IT fields to help you dive deep into advanced concepts and techniques, such as concurrency, memory management, and Generics, all essential for creating high-performance applications. The chapters take you on a flexible journey, covering Swift 6.2’s newest features alongside advanced programming topics such as reflection, concurrency, and Generics. Packed with best practices, testing strategies, and modern programming techniques, this book equips you with the skills to develop scalable, high-performance applications with confidence. Whether you're looking to stay competitive or simply want to excel in Swift 6, this book provides the tools and knowledge you need to succeed.
Table of Contents (25 chapters)
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23
Other Books You May Enjoy
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Index

Introducing closures

Closures are self-contained blocks of code that can be passed around and used throughout our application. Like how the Int type holds an integer and the String type holds a string, a closure can be viewed as a type that holds a block of code. We can, therefore, assign closures to variables, pass them as arguments to functions, and return them from functions.

One of the key features of closures is that they can capture and retain references to any variable or constant from the context in which they were created, a process known as closing over variables or constants. Generally, Swift handles the memory management for us, except in cases where a strong reference cycle is created. We will show you how to resolve strong reference cycles in Chapter 15, Memory Management.

Closures in Swift are similar to blocks in Objective-C but are simpler to use and understand. The syntax for defining a closure in Swift is as follows:

{
    (<#parameters#>) -&gt...
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Mastering Swift 6
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