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  • Book Overview & Buying Swift Cookbook
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Swift Cookbook

Swift Cookbook - Third Edition

By : Keith Moon, Chris Barker, Daniel Bolella, Nathan Lawlor
5 (3)
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Swift Cookbook

Swift Cookbook

5 (3)
By: Keith Moon, Chris Barker, Daniel Bolella, Nathan Lawlor

Overview of this book

Unlock the full potential of Swift and elevate your iOS development skills with this new edition of Swift Cookbook, highlighting the latest features in Swift 5.9. This cookbook will take your Swift programming skills to the next level, boosting your productivity and efficiency step by step through a plethora of practical recipes. Although this book is primarily for experienced iOS developers, it provides an introductory overview of Swift 5.9, including its basic building blocks, syntax, and the functionalities of Swift constructs, to get you warmed up. Once you’ve mastered the fundamentals, you’ll get down to business. Unless you’re completely new to Swift, this recipe-based guide doesn’t need to be read in order; you can jump to whichever topic takes your fancy, from UIKit and SwiftUI to advanced UI techniques, from Swift’s control flow and generics to machine learning with Vision, CoreML, and augmented reality with ARKit. By the end of this book, you’ll be fully up to speed with Swift’s capabilities and be able to develop amazing applications across a wide variety of domains.
Table of Contents (15 chapters)
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Reusing code in functions

Functions are a building block of almost all programming languages, allowing functionality to be defined and reused.

Swift’s syntax provides an expressive way to define your functions, creating concise and readable code.

In this recipe, we will run through the different types of functions we can create and understand how to define and use them.

Getting ready

In this recipe, we can use the playground from the previous recipe. Don’t worry if you didn’t work through the previous recipe, as this one will contain all the code you need.

How to do it…

Let’s look at how functions are defined in Swift:

func nameOfFunction(parameterLabel1 parameter1: ParameterType1, parameterLabel2 parameter2: ParameterType2,...) -> OutputType {
    // Function's implementation
    // If the function has an output type,
    // the function must return a valid value...
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Swift Cookbook
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