Swift Pocket Reference

Introduction

The book «Swift Pocket Reference» by Anthony Gray was published in 2014 — right at the peak of the emergence of Apple's Swift language. This compact 260-page edition is designed as a pocket reference for developers already familiar with programming basics but needing quick access to Swift's syntax, key constructs, and features. Despite several years having passed since its release and the language having evolved significantly, the book remains useful for understanding the fundamental principles of Swift and as a historical document capturing the first version of the language.

What the book is about

The edition covers all basic topics of Swift 1.x: data types, optionals, flow control, functions, closures, enumerations, structures, classes, protocols, extensions, generics, memory management (ARC), and core elements of the standard library. Each chapter is structured as a concise summary with code examples, allowing you to quickly find the needed syntax or rule. Special attention is given to the differences between Swift and Objective-C and C, which helps developers transitioning from other Apple languages.

Who this book is for

The book is aimed at:

• iOS/macOS developers who already have experience with Objective-C or other languages and want to quickly learn Swift;
• Students learning Swift who need a compact reference at hand;
• Programmers transitioning to Swift from other languages (Java, C#, Python) who want to understand syntactic features;
• Anyone who appreciates concise, structured references without unnecessary fluff.

What the reader will learn

• Complete syntax of Swift 1.x: from variables to generics;
• How to work with optionals and safely unwrap them;
• Memory management features through Automatic Reference Counting (ARC);
• Differences between classes and structures, value and reference types;
• Using closures and functional approaches;
• Working with protocols and extensions to add functionality;
• Basics of working with collections (arrays, dictionaries, sets);
• Error handling principles (as of the first version of Swift).

Strengths of the book

The main advantage of «Swift Pocket Reference» is its format. The book truly fits in a pocket (or bag) and contains only the essentials. The author does not delve into lengthy explanations but provides clear definitions and examples. This is an ideal option for quick lookup when you need to recall the syntax of a loop or an enumeration declaration. The book's structure is logical: from simple to complex, with cross-references. It is also worth noting that the book was written before the advent of Swift 2 and 3, so it reflects «pure» Swift without the layering of later changes — this can be useful for understanding the evolution of the language.

Who it is recommended for

We recommend this book to anyone starting to learn Swift and wanting a concise yet comprehensive reference at hand. It will be useful both for students of iOS development courses and for practicing programmers who frequently consult documentation. However, keep in mind that for learning Swift from scratch, it is better to choose more detailed textbooks (for example, «Swift Programming: The Big Nerd Ranch Guide»), and use «Swift Pocket Reference» as a supplement — for review and quick lookup. If you are working with modern versions of Swift (5.x), be aware that some syntax may have changed, but the fundamental concepts remain the same.