book

Swift Cookbook - Second Edition

Name: Swift Cookbook - Second Edition
ISBN: 9781839211195

by Keith Moon, Chris Barker

February 2021

Intermediate to advanced

500 pages

9h 56m

English

Packt Publishing

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Title Page
Copyright and Credits
Swift Cookbook Second Edition
Dedication
Contributors
About the authorsAbout the reviewers
Preface
Who this book is forWhat this book coversTo get the most out of this bookDownload the example code filesCode in ActionDownload the color imagesConventions usedSectionsGetting readyHow to do it…How it works…There's more…See alsoGet in touchReviews
Swift Building Blocks
Technical requirementsCreating your first Swift programGetting readyHow to do it...There's more...See alsoUsing Strings, Ints, Floats, and BoolsGetting readyHow to do it...How it works...There's more...See alsoUnwrapping optionals, and force unwrappingGetting startedHow to do it...How it works...There's more...See alsoReusing code in functionsHow to do it...There's more...Default parameter valuesParameter overloadingSee alsoEncapsulating functionality in object classesHow to do it...How it works...There's more...See alsoBundling values into structsGetting readyHow to do it...How it works...There's more...See alsoEnumerating values with enumsGetting readyHow to do it...How it works...There's more...Methods and computed variablesAssociated valuesSee alsoPassing around functionality with closuresGetting readyHow to do it...How it works...There's more...See alsoUsing protocols to define interfacesGetting readyHow to do it...How it works...There's more...See also
Mastering the Building Blocks
Technical requirementsBundling variables into tuplesGetting readyHow to do it...How it works...There's more...See alsoOrdering your data with arraysGetting startedHow to do it...How it works...There's more...See alsoContaining your data in setsHow to do it...How it works...UnionIntersectionSymmetric differenceSubtractingMembership comparisonSee alsoStoring key-value pairs with dictionariesGetting readyHow to do it...How it works...There's more...See alsoSubscripts for custom typesGetting readyHow to do it...How it works...There's more...See alsoChanging your name with typealiasHow to do it...There's more...See alsoGetting property changing notifications using property observersGetting readyHow to do it...How it works...There's more...See alsoExtending functionality with extensionsGetting readyHow to do it...How it works...There's more...See alsoControlling access with access controlGetting readyHow to do it...How it works...There's more...See also
Data Wrangling with Swift Control Flow
Technical requirementsMaking decisions with if/elseGetting readyHow to do it...How it works...There's more...Understanding conditional unwrappingChaining optional unwrappingUsing enums with associated valuesSee alsoHandling all cases with switchGetting readyHow to do it...How it works...See alsoLooping with for loopsHow to do it...How it works...See alsoLooping with while loopsGetting readyHow to do it...How it works...There's more...See alsoHandling errors with try, throw, do, and catchHow to do it...How it works...There's more...See alsoChecking upfront with guardGetting readyHow to do it...How it works...There's more...See alsoDoing it later with deferGetting readyHow to do it...How it works...There's more...See alsoBailing out with fatalError and preconditionGetting readyHow to do it...How it works...See also
Generics, Operators, and Nested Types
Technical requirementsUsing generics with typesGetting readyHow to do it...How it works...There's more...See alsoUsing generics with functionsHow to do it...How it works...There's more...See alsoUsing generics with protocolsHow to do it...How it works...There's more...See alsoUsing advanced operatorsHow to do it...See alsoDefining option setsHow to do it...How it works...See alsoCreating custom operatorsGetting readyHow to do it...How it works...There's more...See alsoNesting types and namespacingHow to do it...How it works...There's more...See also
Beyond the Standard Library
Technical requirementsComparing dates with FoundationGetting readyHow to do it...How it works...See alsoFetching data with URLSessionGetting readyHow to do it...How it works...See alsoWorking with JSONGetting readyHow to do it...There's more...Working with XMLGetting readyHow to do it...How it works...There's more...See also

Building iOS Apps with Swift
Technical requirementsBuilding an iOS App using Cocoa TouchGetting readyHow to do it...How it works...There's more...See alsoUnit and integration testing with XCTestGetting readyHow to do it...How it works...There's more...See alsoUser interface testing with XCUITestGetting readyHow to do it...There's more...See alsoBackward compatibilityHow to do it...There's more...See also
Swift Playgrounds
Technical requirementsUsing Swift Playgrounds for UIGetting readyHow to do it...How it works...There's more...See alsoImporting resources into playgroundsGetting readyHow to do it...How it works...See alsoImporting code into playgroundsGetting readyHow to do it...How it works...See alsoMulti-page playgroundsGetting readyHow to do it...How it works...There's more...See alsoUsing Swift Playgrounds on iPadOSGetting readyHow to do it...How it works...There's moreSee also
Server-Side Swift
Technical requirementsRunning Swift on LinuxGetting startedHow to do it...There's more...Building a REST API using Vapor and FluentGetting startedHow to do it...How it works...There's more...See alsoDatabase persistence with Fluent and PostgresGetting readyHow to do it...How it works...See alsoHosting your Vapor app on HerokuGetting startedHow to do it...See alsoThe Swift Package ManagerGetting startedHow to do it...How it works...There's more...See alsoReal-time communication using WebSocketsGetting startedHow to do it...How it works...There's more...See alsoPackaging and sharing models between server and appGetting startedHow to do it...How it works...There's more...
Performance and Responsiveness in Swift
Technical requirementsValue and reference semanticsGetting readyHow to do it...How it works...See alsoUsing Dispatch queues for concurrencyGetting readyHow to do it...How it works...See alsoConcurrent queues and dispatch groupsGetting readyHow to do it...How it works...See alsoImplementing the operation classGetting readyHow to do it...How it works...See also
SwiftUI and Combine Framework
Technical requirementsDeclarative syntaxGetting readyHow to do it...How it works...There's more...See alsoFunction builders, property wrappers, and opaque return typesGetting readyHow to do it...There's more...See alsoBuilding simple views in SwiftUIGetting readyHow to do it...How it works...There's more...See alsoCombine and data flow in SwiftUIGetting readyHow to do it...How it works...See also
Using CoreML and Vision in Swift
Technical requirementsBuilding an image capture appGetting readyHow to do it...How it works...There's more...See alsoUsing CoreML models to detect objects in imagesGetting readyHow to do it...How it works...There's more...See alsoBuilding a video capture appGetting readyHow to do it...How it works...There's more...See alsoUsing CoreML and the Vision Framework to detect objects in real timeGetting readyHow to do it...How it works...See also
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Content preview from Swift Cookbook - Second Edition

Performance and Responsiveness in Swift

We have covered a lot of ground in the previous chapters, and we have a lot of Swift tools in our tool belt. Now it's time to delve into more advanced topics, looking at how certain Swift types are implemented, how they can be used, and what their performance characteristics are. We will also look at how we can perform asynchronous tasks using Grand Central Dispatch (GCD) through the Dispatch framework and the higher-level operations in the Foundation framework that are also built on GCD.

Understanding the multithreaded environment available on all Apple platforms, as well as the performance profile of the Swift constructs you use, is vital to building a fast and responsive app.

In this chapter, we ...

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Publisher Resources

ISBN: 9781839211195

Cloud Computing

Data Engineering

Data Science

AI & ML

Programming Languages

Software Architecture

IT/Ops

Security

Design

Business

Soft Skills

Swift Cookbook - Second Edition

by Keith Moon, Chris Barker

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.