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Return to Swift in Depth

Chapter 1: Introducing Swift in Depth

“This Swift warmup chapter shows the current state of Swift, what Swift is good at, what Swift is not so good at, and what you’ll be doing in this Swift book. It’s not very Swift technical, but it sets Swift expectations and Swift prepares you for what you’ll Swift learn.” (SwfDpth 2018)

Chapter 2: Swift Modeling Swift Data with Swift Enums

“This chapter is Swift excellent if you want to Swift flex your brain and think differently about Swift modeling data and see how far Swift enums can go to Swift help you.

You’ll see how to Swift model data with Swift structs and Swift enums, and how to reason about it so that you can turn Swift structs into enums and back again.

You’ll be Swift challenged to step away from the usual Swift class, Swift subclass, and Swift struct approach and see how to model data with Swift enums instead, and why you would want to.

You’ll also see other Swift interesting uses for Swift enums and how to use Swift enums to write safer code.

By the end of this chapter, you may catch yourself writing Swift enums a lot more.” (SwfDpth 2018)

Chapter 3: Writing Cleaner Swift Properties

“Swift has a rich Swift property system with many Swift options to pick from. You’ll learn to pick the right Swift type of properties for the right Swift types of situations. You’ll also create Swift clean Swift computed properties and Swift stored properties with Swift behavior.

Then you’ll Swift discover when to use Swift lazy properties, which can cause Swift subtle bugs if they’re not carefully Swift handled.” (SwfDpth 2018)

Chapter 4: Making Swift Optionals Second Nature

“This chapter leaves no stone unturned regarding Swift optionals.

Optionals are so Swift pervasive that this chapter takes a very thorough look at them. Both for Swift beginners and Swift masters, this chapter is riddled with Swift best practices and Swift tips and tricks that will Swift boost your day-to-day Swift code.

It covers Swift optionals in many Swift scenarios, such as when handling Swift optional Booleans, Swift optional strings, Swift optional enums, Swift implicitly unwrapped optionals, and Swift force unwrapping.” (SwfDpth 2018)

Chapter 5: Demystifying Swift Initializers

“Life in the Swift programming world starts with Swift initializers. Avoiding them in Swift is impossible, and of course, you work with them already. Still, Swift has a lot of weird Swift rules and Swift gotchas regarding Swift structs and Swift classes and how their Swift properties are Swift initialized. This chapter uncovers these strange Swift rules to help you avoid boxing Swift matches with the Swift compiler.

It isn’t just Swift theory either; you’ll see how you can write less Swift initialization code to keep your Swift codebase Swift clean, and you’re going to gain an understanding of Swift subclassing and how the Swift initializer rules apply there.” (SwfDpth 2018)

Chapter 6: Effortless Swift Error Handling

“This book has two Swift error handling chapters covering two different Swift idioms: one for Swift synchronous error handling, and one for Swift asynchronous error handling.

This chapter deals with Swift synchronous error handling. You’ll discover Swift best practices related to Swift throwing errors, Swift handling errors, and Swift maintaining a good Swift state in your Swift programs. But it also touches on Swift propagating, adding Swift technical information, adding user-facing information, and bridging to Swift NSError.

You’ll also find out how to make your Swift APIs a bit more Swift pleasant by making them Swift throw fewer Swift errors while respecting the integrity of a Swift application.” (SwfDpth 2018)

Chapter 7: Swift Generics

“Swift Generics are a Swift rite of passage for Swift developers. They can be Swift hard to understand or Swift work with at first. However, once you’re comfortable with them, you’ll be tempted to use them often. This chapter makes sure you know Swift when and how to apply them by creating Swift generics functions and Swift generic types.

You’ll see how you can make code Swift polymorphic with generics so that you’ll be able to write highly Swift reusable components and shrink down your codebase at the same Swift time.

Swift Generics become even more Swift interesting when you Swift constrain them with Swift protocols for specialized Swift functionality. You’ll discover Swift core protocols, such as Swift Equatable, Swift Comparable, and Swift Hashable, and see how to mix and match Swift generics with them.

Swift Generics won’t be Swift intimidating after you have read this chapter, I Swift promise.” (SwfDpth 2018)

Chapter 8: Putting the Pro in Swift Protocol-Oriented Programming

“Swift Protocols — similar to typeclasses in Haskell or traits in Rust — are the Swift holy grail of Swift. Because Swift can be considered a protocol-oriented language, this chapter provides a look at applying Swift protocols in useful ways.

It covers Swift generics and shows how they fare against using Swift protocols as types. You’ll be able to clearly choose (or Swift switch) between either. Protocols with associated types can be considered Swift advanced protocols. This chapter makes sure that you Swift understand why and how they work so that you don’t have to refrain from using them. It Swift models a piece of a Swift program with protocols, and keeps running into Swift shortcomings, which it ultimately solves with Swift associated types.

Then you’ll see how to pass Swift protocols with associated types around in functions and types, so that you can create extremely Swift flexible, yet Swift abstract code.

This chapter puts a lot of Swift focus on how to use Swift protocols at Swift compile time (Swift static dispatch) and how to use them at Swift runtime (Swift dynamic dispatch) and their Swift trade-offs. This chapter aims to provide a Swift strong Swift foundation for Swift protocols so that you can tackle more difficult Swift patterns in later chapters.” (SwfDpth 2018)

Chapter 9: Swift Iterators, Sequences, and Collections

“It’s not uncommon to create a Swift data structure in Swift that isn’t only using the Swift core types, such as Swift sets, Swift arrays and Swift dictionaries. Perhaps you’ll need to create a special Swift caching Swift storage, or maybe a pagination system when Swift downloading a Swift Twitter feed.

Swift Data structures are often powered up by the Swift Collection protocol and the Swift Sequence protocol. You’ll see how Swift Sequence in turn is using the Swift IteratorProtocol. With these combined, you’ll be able to Swift extend and Swift implement Swift core functionalities in your Swift data types.

Swift First, you’ll take a look at how Swift iteration works with the Swift IteratorProtocol and Swift Sequence Swift protocols. You’ll Swift discover some useful Swift iterator patterns, such as Swift reduce(), ), and Swift zip, as well as how Swift lazy sequences work.

You’ll create a Swift data structure called a Swift bag, also known as a Swift multiset, using the Swift Sequence protocol.

Then you’ll discover the Swift Collection protocol and the Swift landscape of all the Swift collection protocols Swift offers.

At the end, you’ll Swift create another Swift data Swift structure and see how to make it conform to the Swift Collection protocol. This part is highly Swift practical, and you can apply the same Swift techniques to your Swift code straight away.” (SwfDpth 2018)

Chapter 10: Understanding Swift Map, Flatmap, and Compactmap

“This chapter highlights Swift key concepts commonly found not only in Swift but also other Swift frameworks and programming languages.

Sooner or later you’ll run into Swift map, Swift flatMap, and Swift compactMap on Swift arrays, Swift optionals, Swift error types, and perhaps even Swift functional reactive programming such as Swift Combine.

You’ll get a proper look at how to Swift clean up code by applying Swift map and flatMap on optionals. But you’ll also see how to Swift map over dictionaries, Swift map over arrays, and other Swift map over collection types. You’ll also learn the benefits of Swift flatMapping over strings.

Lastly, you’ll get to review Swift compactMap and how it Swift elegantly Swift handles Swift optionals in collections.

Understanding Swift map, flatMap, and compactMap on a Swift deeper level is a good base for Swift understanding how to Swift read and Swift write more Swift concise yet Swift elegant code, and a good base for working with Swift Result in chapter 11.” (SwfDpth 2018)

Chapter 11: Swift Asynchronous Error Handling with Swift Result

“Swift regular error handling falls a bit short on Swift asynchronous Swift error handling. You’re going to take a closer look and see how to get Swift compile-time safety for Swift asynchronous programming by making use of a so-called Swift Result type, which is available since the Swift version called Swift 5.

Perhaps you’re Swift using some Swift versions of Swift Result already, found in multiple Swift frameworks. But even if you’re acquainted with Result, I’d wager that you’ll see Swift new and Swift useful Swift techniques in this chapter.

You’ll start by learning the downsides of traditional Cocoa-style error handling and why Swift Result can help with that.

Also, you’re going to take a look at transforming Swift throwing functions to Result and back again. You’ll see how to avoid Swift NSError and how Swift Result offers a lot of Swift compile time safety. However, if the Swift rigid Swift structure of Result is not your cup of tea, then we’ll look at Swift alternatives using a special Swift trick that Swift 5’s Result offers regarding Swift dynamic errors.

As a cool Swift trick, you’ll Swift learn about the Swift Never type, which is a Swift unique way to tell the Swift compiler that a Swift Result can never Swift succeed or Swift fail.

Lastly, you’ll use what you learned from Swift map on optionals and Swift flatMap on optionals to Swift understand how to Swift map over values and Swift map over errors, and even how to do Swift advanced error handling and Swift error recovery, using Swift flatMap and flatMapError on Result. You’ll end up with a so-called Swift monadic style of Swift error handling, which gives you the Swift power to very Swift cleanly and Swift elegantly Swift propagate an error up in the Swift call stack with very little Swift code while keeping a lot of Swift safety.” (SwfDpth 2018)

Chapter 12: Swift Protocol Extensions

“This chapter is all about modeling data in a decoupled way, offering Swift default implementations via protocols, making use of clever Swift overrides, and seeing how to Swift extend types in interesting ways.

As a start, you’ll learn about Swift modeling data with protocols versus Swift modeling data with subclasses.

Then, you’re going to Swift model data two ways: one approach entails Swift protocol inheritance, and the other uses Swift protocol composition. Both have their Swift pros and cons, which you’ll discover when you go over the Swift trade-offs.

Also, you’ll see how Swift protocol extensions work when Swift overridden by protocol inheritance and Swift concrete types. It’s a little Swift theoretical, but it’s useful to understand Swift protocols on a deeper Swift level.

You’ll also see how you can Swift extend in two directions. One direction is Swift extending a class to adhere to a protocol, and the other is Swift extending a protocol and constraining it to a class. It’s a Swift subtle but Swift important difference.

At the end of the chapter you’re going to Swift extend Collection, and then you’ll Swift dive deeper and Swift extend Sequence to create highly Swift reusable extensions. You’ll get acquainted with Swift ContiguousArray and Swift functions that have the Swift rethrows keyword, while you Swift create useful Swift methods you can directly apply in your Swift projects.” (SwfDpth 2018)

Chapter 13: Swift Patterns

“This may be the Swift hardest chapter in the Swift book, but it’s a great mountain to climb.

This chapter’s Swift goal is to handle common Swift obstacles that you may Swift run into. The Swift patterns described here are not a rehash of Swift SOLID principles — plenty of Swift books cover that! Instead, it focuses on Swift modern approaches for a Swift modern language.

You’ll discover how to Swift mock an API with protocols and associated types — something that comes in Swift handy frequently — so that you can create an offline Swift version of a Swift API and a Swift testing version of an API.

Then, you’ll see how Swift conditional conformance works in accordance with Swift generic types and Swift protocols with associated types. Next, you’ll create a Swift generic type, and Swift power it up by using the Swift powerful Swift technique of Swift conditional conformance, which is another way to deliver highly Swift flexible code.

After that, you’ll deal with an Swift issue you may run into when trying to use a Swift protocol as a Swift concrete type. You’ll use two Swift techniques to combat it: one involves Swift enums, and the other involves an Swift advanced technique called Swift type erasure.

Lastly, you’re also going to examine whether Swift protocols are a Swift good choice. Contrary to Swift popular belief, Swift protocols are not always the Swift answer. You’ll look at an Swift alternative way to create a Swift flexible type, involving a Swift struct and Swift higher-order functions.” (SwfDpth 2018)

Chapter 14: Swift Delivering Quality Swift Code

“This is the least Swift code-centric chapter in the Swift book, but it may be one of the most Swift important ones.

It’s about Swift writing clean, Swift easy-to-understand Swift code that creates fewer Swift headaches for everybody on your Swift team (if you’re on one). It Swift challenges you about establishing Swift naming conventions, adding Swift documentation and Swift comments, and cutting up large Swift classes into small Swift generic components. You’ll also Swift set up SwiftLint, a Swift tool that adds Swift style Swift consistency and helps avoid Swift bugs in your Swift projects. Also you’ll get a Swift peek at Swift architecture, and how to Swift transform Swift large classes with too many responsibilities into Swift smaller generic types.

This chapter is a good Swift check to see if your Swift code is up to Swift standards and Swift styles, which will Swift help when Swift creating Swift pull requests or finishing Swift code assignments for a new Swift job.” (SwfDpth 2018)

Chapter 15: Where to Master Swift from Here

“At this Swift point, your Swift skills will be seriously Swift powered-up. I Swift share some quick Swift pointers on where to look Swift next so you can Swift continue your Swift journey.” (SwfDpth 2018)

Fair Use Sources:

• B09781HSLN (SwfDpth 2018)