Swift

14:01

What’s new in SwiftData

WWDC24

What’s new in SwiftData SwiftData makes it easy to add persistence to your app with its expressive, declarative API. Learn about refinements to SwiftData, including compound uniqueness constraints, faster queries with #Index, queries in Xcode previews, and rich predicate expressions. Join us to explore how you can use... WWDC24

23:58

Meet Swift Testing

WWDC24

Meet Swift Testing Introducing Swift Testing: a new package for testing your code using Swift. Explore the building blocks of its powerful new API, discover how it can be applied in common testing workflows, and learn how it relates to XCTest and open source Swift. WWDC24

30:24

What’s new in Swift

WWDC24

What’s new in Swift Join us for an update on Swift. We'll briefly go through a history of Swift over the past decade, and show you how the community has grown through workgroups, expanded the package ecosystem, and increased platform support. We'll introduce you to a new language mode that achieves data-race safety... WWDC24

41:48

Migrate your app to Swift 6

WWDC24

Migrate your app to Swift 6 Experience Swift 6 migration in action as we update an existing sample app. Learn how to migrate incrementally, module by module, and how the compiler helps you identify code that's at risk of data races. Discover different techniques for ensuring clear isolation boundaries and eliminating... WWDC24

27:36

A Swift Tour: Explore Swift’s features and design

WWDC24

A Swift Tour: Explore Swift’s features and design Learn the essential features and design philosophy of the Swift programming language. We'll explore how to model data, handle errors, use protocols, write concurrent code, and more while building up a Swift package that has a library, an HTTP server, and a command line client. Whether you're just... WWDC24

22:14

What’s new in Xcode 16

WWDC24

What’s new in Xcode 16 Discover the latest productivity and performance improvements in Xcode 16. Learn about enhancements to code completion, diagnostics, and Xcode Previews. Find out more about updates in builds and explore improvements in debugging and Instruments. WWDC24

22:17

Go small with Embedded Swift

WWDC24

Go small with Embedded Swift Embedded Swift brings the safety and expressivity of Swift to constrained environments. Explore how Embedded Swift runs on a variety of microcontrollers through a demonstration using an off-the-shelf Matter device. Learn how the Embedded Swift subset packs the benefits of Swift into a tiny... WWDC24

13:52

Create a custom data store with SwiftData

WWDC24

Create a custom data store with SwiftData Combine the power of SwiftData's expressive, declarative modeling API with your own persistence backend. Learn how to build a custom data store and explore how to progressively add persistence features in your app. To get the most out of this session, watch “Meet SwiftData” and “Model your schema... WWDC24

16:40

Explore the Swift on Server ecosystem

WWDC24

Explore the Swift on Server ecosystem Swift is a great language for writing your server applications, and powers critical services across Apple's cloud products. We'll explore tooling, delve into the Swift server package ecosystem, and demonstrate how to interact with databases and add observability to applications. WWDC24

27:16

Go further with Swift Testing

WWDC24

Go further with Swift Testing Learn how to write a sweet set of (test) suites using Swift Testing's baked-in features. Discover how to take the building blocks further and use them to help expand tests to cover more scenarios, organize your tests across different suites, and optimize your tests to run in parallel. WWDC24

28:48

Run, Break, Inspect: Explore effective debugging in LLDB

WWDC24

Run, Break, Inspect: Explore effective debugging in LLDB Learn how to use LLDB to explore and debug codebases. We'll show you how to make the most of crashlogs and backtraces, and how to supercharge breakpoints with actions and complex stop conditions. We'll also explore how the “p” command and the latest features in Swift 6 can enhance your debugging... WWDC24

33:03

Analyze heap memory

WWDC24

Analyze heap memory Dive into the basis for your app's dynamic memory: the heap! Explore how to use Instruments and Xcode to measure, analyze, and fix common heap issues. We'll also cover some techniques and best practices for diagnosing transient growth, persistent growth, and leaks in your app. WWDC24

16:52

Track model changes with SwiftData history

WWDC24

Track model changes with SwiftData history Reveal the history of your model's changes with SwiftData! Use the history API to understand when data store changes occurred, and learn how to use this information to build features like remote server sync and out-of-process change handing in your app. We'll also cover how you can build support... WWDC24

34:36

Explore Swift performance

WWDC24

Explore Swift performance Discover how Swift balances abstraction and performance. Learn what elements of performance to consider and how the Swift optimizer affects them. Explore the different features of Swift and how they're implemented to further understand the tradeoffs available that can impact performance. WWDC24

22:21

Consume noncopyable types in Swift

WWDC24

Consume noncopyable types in Swift Get started with noncopyable types in Swift. Discover what copying means in Swift, when you might want to use a noncopyable type, and how value ownership lets you state your intentions clearly. WWDC24

8:52

Meet SwiftData

WWDC23

Meet SwiftData SwiftData is a powerful and expressive persistence framework built for Swift. We'll show you how you can model your data directly from Swift code, use SwiftData to work with your models, and integrate with SwiftUI. WWDC23

43:07

What’s new in Swift

WWDC23

What’s new in Swift Join us for an update on Swift. We'll show you how APIs are becoming more extensible and expressive with features like parameter packs and macros. We'll also take you through improvements to interoperability and share how we're expanding Swift's performance and safety benefits everywhere from... WWDC23

39:43

Expand on Swift macros

WWDC23

Expand on Swift macros Discover how Swift macros can help you reduce boilerplate in your codebase and adopt complex features more easily. Learn how macros can analyze code, emit rich compiler errors to guide developers towards correct usage, and generate new code that is automatically incorporated back into your... WWDC23

33:58

Write Swift macros

WWDC23

Write Swift macros Discover how you can use Swift macros to make your codebase more expressive and easier to read. Code along as we explore how macros can help you avoid writing repetitive code and find out how to use them in your app. We'll share the building blocks of a macro, show you how to test it, and take... WWDC23

33:53

Create rich documentation with Swift-DocC

WWDC23

Create rich documentation with Swift-DocC Learn how you can take advantage of the latest features in Swift-DocC to create rich and detailed documentation for your app or framework. We'll show you how to use the Xcode 15 Documentation Preview editor to efficiently iterate on your existing project's documentation, and explore expanded... WWDC23

26:15

Meet mergeable libraries

WWDC23

Meet mergeable libraries Discover how mergeable libraries combine the best parts of static and dynamic libraries to help improve your app's productivity and runtime performance. Learn how you can enable faster development while shipping the smallest app. We'll show you how to adopt mergeable libraries in Xcode 15 and... WWDC23

18:24

Generalize APIs with parameter packs

WWDC23

Generalize APIs with parameter packs Swift parameter packs are a powerful tool to expand what is possible in your generic code while also enabling you to simplify common generic patterns. We'll show you how to abstract over types as well as the number of arguments in generic code and simplify common generic patterns to avoid... WWDC23

17:45

Mix Swift and C++

WWDC23

Mix Swift and C++ Learn how you can use Swift in your C++ and Objective-C++ projects to make your code safer, faster, and easier to develop. We'll show you how to use C++ and Swift APIs to incrementally incorporate Swift into your app. WWDC23

18:34

Design with SwiftUI

WWDC23

Design with SwiftUI Discover how SwiftUI can help you quickly iterate and explore design ideas. Learn from Apple designers as they share how working with SwiftUI influenced the design of the Maps app in watchOS 10 and other elements of their work, and find out how you can incorporate these workflows in your own... WWDC23

9:25

Model your schema with SwiftData

WWDC23

Model your schema with SwiftData Learn how to use schema macros and migration plans with SwiftData to build more complex features for your app. We'll show you how to fine-tune your persistence with @Attribute and @Relationship options. Learn how to exclude properties from your data model with @Transient and migrate from one... WWDC23

11:13

Migrate to SwiftData

WWDC23

Migrate to SwiftData Discover how you can start using SwiftData in your apps. We'll show you how to use Xcode to generate model classes from your existing Core Data object models, use SwiftData alongside your previous implementation, or even completely replace your existing solution. Before watching this session,... WWDC23

24:22

Beyond the basics of structured concurrency

WWDC23

Beyond the basics of structured concurrency It's all about the task tree: Find out how structured concurrency can help your apps manage automatic task cancellation, task priority propagation, and useful task-local value patterns. Learn how to manage resources in your app with useful patterns and the latest task group APIs. We'll show you... WWDC23

21:56

Meet Swift OpenAPI Generator

WWDC23

Meet Swift OpenAPI Generator Discover how Swift OpenAPI Generator can help you work with HTTP server APIs whether you're extending an iOS app or writing a server in Swift. We'll show you how this package plugin can streamline your workflow and simplify your codebase by generating code from an OpenAPI document. WWDC23

15:35

Dive deeper into SwiftData

WWDC23

Dive deeper into SwiftData Learn how you can harness the power of SwiftData in your app. Find out how ModelContext and ModelContainer work together to persist your app's data. We'll show you how to track and make your changes manually and use SwiftData at scale with FetchDescriptor, SortDescriptor, and enumerate. To get... WWDC23

14:05

Discover the Journaling Suggestions API

Tech Talks

Discover the Journaling Suggestions API Find out how the new Journaling Suggestions API can help people reflect on the small moments and big events in their lives though your app — all while protecting their privacy. Learn how to leverage the API to retrieve assets and metadata for journaling suggestions, invoke a picker on top of the... Tech Talks

23:48

Explore and manipulate data in Swift with TabularData

Tech Talks

Explore and manipulate data in Swift with TabularData Discover how you can use the TabularData framework to load, explore, and manipulate unstructured data in Swift — whether you need to pre-process data for a machine learning task or digest data on-the-fly in your app. Learn how this framework can help you handle large datasets, join multiple... Tech Talks

24:38

Visualize and optimize Swift concurrency

WWDC22

Visualize and optimize Swift concurrency Learn how you can optimize your app with the Swift Concurrency template in Instruments. We'll discuss common performance issues and show you how to use Instruments to find and resolve these problems. Learn how you can keep your UI responsive, maximize parallel performance, and analyze Swift... WWDC22

15:48

Build your first app in Swift Playgrounds

WWDC22

Build your first app in Swift Playgrounds Learn how you can easily prototype and build apps with Swift Playgrounds. We'll show you how to create an app from a blank project, build its interface with SwiftUI, and use Swift Package Manager to add extra functionality from an open source package. We'll also explore how you can debug issues... WWDC22

38:16

What's new in Swift

WWDC22

What's new in Swift Join us for an update on Swift. We'll take you through performance improvements, explore more secure and extensible Swift packages, and share advancements in Swift concurrency. We'll also introduce you to Swift Regex, better generics, and other tools built into the language to help you write more... WWDC22

13:01

Meet Swift Async Algorithms

WWDC22

Meet Swift Async Algorithms Discover the latest open source Swift package from Apple: Swift Async Algorithms. We'll explore algorithms from this package that you can use with AsyncSequence, including zip, merge, and throttle. Follow along with us as we use these algorithms to build a great messaging app. We'll also share... WWDC22

22:58

Meet Swift Regex

WWDC22

Meet Swift Regex Learn how you can process strings more effectively when you take advantage of Swift Regex. Come for concise literals but stay for Regex builders — a new, declarative approach to string processing. We'll also explore the Unicode models in String and share how Swift Regex can make Unicode-correct... WWDC22

25:17

Meet distributed actors in Swift

WWDC22

Meet distributed actors in Swift Discover distributed actors — an extension of Swift's actor model that simplifies development of distributed systems. We'll explore how distributed actor isolation and location transparency can help you avoid the accidental complexity of networking, serialization, and other transport concerns... WWDC22

16:03

Use Xcode to develop a multiplatform app

WWDC22

Use Xcode to develop a multiplatform app Learn how you can build apps for multiple Apple platforms using Xcode 14. We'll show you how to streamline app targets, maintain a common codebase, and share settings by default. We'll also explore how you can customize your app for each platform through conditionalizing your settings and code. WWDC22

20:26

Create engaging content for Swift Playgrounds

WWDC22

Create engaging content for Swift Playgrounds Learn how you can build guided instructional content designed for Swift Playgrounds. Follow along with us as we explore how you can add a guide to a completed sample code project. We'll demonstrate how to add tasks to your learning center to show off relevant code and optional experiment tasks... WWDC22

28:54

Eliminate data races using Swift Concurrency

WWDC22

Eliminate data races using Swift Concurrency Join us as we explore one of the core concepts in Swift concurrency: isolation of tasks and actors. We'll take you through Swift's approach to eliminating data races and its effect on app architecture. We'll also discuss the importance of atomicity in your code, share the nuances of Sendable... WWDC22

27:29

Embrace Swift generics

WWDC22

Embrace Swift generics Generics are a fundamental tool for writing abstract code in Swift. Learn how you can identify opportunities for abstraction as your code evolves, evaluate strategies for writing one piece of code with many behaviors, and discover language features in Swift 5.7 that can help you make generic code... WWDC22

21:32

Swift Regex: Beyond the basics

WWDC22

Swift Regex: Beyond the basics Go beyond the basics of string processing with Swift Regex. We'll share an overview of Regex and how it works, explore Foundation's rich data parsers and discover how to integrate your own, and delve into captures. We'll also provide best practices for matching strings and wielding Regex-powered... WWDC22

25:31

Design protocol interfaces in Swift

WWDC22

Design protocol interfaces in Swift Learn how you can use Swift 5.7 to design advanced abstractions using protocols. We'll show you how to use existential types, explore how you can separate implementation from interface with opaque result types, and share the same-type requirements that can help you identify and guarantee... WWDC22

20:04

Debug Swift debugging with LLDB

WWDC22

Debug Swift debugging with LLDB Learn how you can set up complex Swift projects for debugging. We'll take you on a deep dive into the internals of LLDB and debug info. We'll also share best practices for complex scenarios such as debugging code built on build servers or code from custom build systems. WWDC22

15:27

Meet Swift Package plugins

WWDC22

Meet Swift Package plugins Discover how you can perform actions on Swift packages and Xcode projects with Swift package plugins. We'll go over how these plugins work and explore how you can use them to generate source code and automate your development workflow. WWDC22

24:02

Create Swift Package plugins

WWDC22

Create Swift Package plugins Tailor your development workflow and learn how to write your own package plugins in Swift. We'll show you how you can extend Xcode's functionality by using the PackagePlugin API to generate source code or automate release tasks and share best practices for creating great plugins. WWDC22

17:35

Use Xcode for server-side development

WWDC22

Use Xcode for server-side development Discover how you can create, build, and deploy a Swift server app alongside your pre-existing Xcode projects within the same workspace. We'll show you how to create your own local app and test endpoints using Xcode, and explore how you can structure and share code between server and client apps... WWDC22

33:39

Meet async/await in Swift

WWDC21

Meet async/await in Swift Swift now supports asynchronous functions — a pattern commonly known as async/await. Discover how the new syntax can make your code easier to read and understand. Learn what happens when a function suspends, and find out how to adapt existing completion handlers to asynchronous functions. WWDC21

27:54

Explore structured concurrency in Swift

WWDC21

Explore structured concurrency in Swift When you have code that needs to run at the same time as other code, it's important to choose the right tool for the job. We'll take you through the different kinds of concurrent tasks you can create in Swift, show you how to create groups of tasks, and find out how to cancel tasks in progress... WWDC21

32:45

What‘s new in Swift

WWDC21

What‘s new in Swift Join us for an update on Swift. Discover the latest language advancements that make your code easier to read and write. Explore the growing number of APIs available as Swift packages. And we'll introduce you to Swift's async/await syntax, structured concurrency, and actors. WWDC21

14:21

Meet AsyncSequence

WWDC21

Meet AsyncSequence Iterating over a sequence of values over time is now as easy as writing a “for” loop. Find out how the new AsyncSequence protocol enables a natural, simple syntax for iterating over anything from notifications to bytes being streamed from a server. We'll also show you how to adapt existing code... WWDC21

28:32

Protect mutable state with Swift actors

WWDC21

Protect mutable state with Swift actors Data races occur when two separate threads concurrently access the same mutable state. They are trivial to construct, but are notoriously hard to debug. Discover how you can stop these data races in their tracks with Swift actors, which help synchronize access to data in your code. Discover how... WWDC21

13:40

Use async/await with URLSession

WWDC21

Use async/await with URLSession Discover how you can adopt Swift concurrency in URLSession using async/await and AsyncSequence, and how you can apply Swift concurrency concepts to improve your networking code. WWDC21

61:00

Swift concurrency: Update a sample app

WWDC21

Swift concurrency: Update a sample app Discover Swift concurrency in action: Follow along as we update an existing sample app. Get real-world experience with async/await, actors, and continuations. We'll also explore techniques for migrating existing code to Swift concurrency over time. To get the most out of this code-along, we... WWDC21

22:54

Discover concurrency in SwiftUI

WWDC21

Discover concurrency in SwiftUI Discover how you can use Swift's concurrency features to build even better SwiftUI apps. We'll show you how concurrent workflows interact with your ObservableObjects, and explore how you can use them directly in your SwiftUI views and models. Find out how to use await to make your app run... WWDC21

30:30

Meet the Swift Algorithms and Collections packages

WWDC21

Meet the Swift Algorithms and Collections packages Discover two of the latest additions to the list of open-source Swift packages from Apple: Swift Algorithms and Swift Collections. Not only can you use these packages immediately, they also incubate new algorithms and data structures for eventual inclusion in the Swift Standard Library. We'll... WWDC21

27:04

Bring Core Data concurrency to Swift and SwiftUI

WWDC21

Bring Core Data concurrency to Swift and SwiftUI Discover how Core Data is adopting the new concurrency capabilities of Swift 5.5, leading to more concise, efficient, and safe asynchronous code. We'll show you how to update Core Data in your apps to work with concurrency, and detail the many other improvements throughout the framework that make... WWDC21

39:18

Swift concurrency: Behind the scenes

WWDC21

Swift concurrency: Behind the scenes Dive into the details of Swift concurrency and discover how Swift provides greater safety from data races and thread explosion while simultaneously improving performance. We'll explore how Swift tasks differ from Grand Central Dispatch, how the new cooperative threading model works, and how to... WWDC21

14:26

Discover and curate Swift Packages using Collections

WWDC21

Discover and curate Swift Packages using Collections Whether you're curating packages for your team, for education purposes, or to share with other developers, Swift Package Collections can help you discover, explore and import new packages into your project. Discover improvements in the Swift Package workflow using Collections, and learn how you... WWDC21

20:42

ARC in Swift: Basics and beyond

WWDC21

ARC in Swift: Basics and beyond Learn about the basics of object lifetimes and ARC in Swift. Dive deep into what language features make object lifetimes observable, consequences of relying on observed object lifetimes and some safe techniques to fix them. WWDC21

46:56

Write a DSL in Swift using result builders

WWDC21

Write a DSL in Swift using result builders Some problems are easier to solve by creating a customized programming language, or “domain-specific language.” While creating a DSL traditionally requires writing your own compiler, you can instead use result builders with Swift 5.4 to make your code both easier to read and maintain. We'll take... WWDC21

27:44

What's new in SwiftUI

WWDC20

What's new in SwiftUI SwiftUI can help you build better and more powerful apps for iPhone, iPad, Mac, Apple Watch, and Apple TV. Learn more about the latest refinements to SwiftUI, including interface improvements like outlines, grids, and toolbars. Take advantage of SwiftUI's enhanced support across Apple frameworks... WWDC20

15:43

Swift packages: Resources and localization

WWDC20

Swift packages: Resources and localization Bring your resources along for the ride when you organize and share code using Swift packages. Discover how to include assets like images and storyboards in a package and how to access them from code. And learn how to add localized strings to make your code accessible to people around the world... WWDC20

17:23

Explore logging in Swift

WWDC20

Explore logging in Swift Meet the latest generation of Swift unified logging APIs. Learn how to log events and errors in your app while preserving privacy. Take advantage of powerful yet readable options for formatting data — all without sacrificing performance. And we'll show you how you can gather and process log... WWDC20

14:51

Explore Packages and Projects with Xcode Playgrounds

WWDC20

Explore Packages and Projects with Xcode Playgrounds Xcode Playgrounds helps developers explore Swift and framework APIs and provides a scratchpad for rapid experimentation. Learn how Xcode Playgrounds utilizes Xcode's modern build system, provides improved support for resources, and integrates into your projects, frameworks, and Swift packages to... WWDC20

5:18

Swan's Quest, Chapter 2: A time for tones

WWDC20

Swan's Quest, Chapter 2: A time for tones Swift Playgrounds presents "Swan's Quest,” an interactive adventure in four chapters for all ages. In this chapter, our Hero needs your help decoding the Swan's scroll. Call forth the best of your audio abilities on this one — you're going to need them. Discover how to convert Swift Playgrounds... WWDC20

11:43

Handle interruptions and alerts in UI tests

WWDC20

Handle interruptions and alerts in UI tests Learn how to anticipate potential interruptions to your app's interface and build smart tests to identify them. UI interruptions often appear indeterminately, typically during onboarding or first launch, which can make them hard to track down. Learn how to understand interruptions, write stronger... WWDC20

20:53

Embrace Swift type inference

WWDC20

Embrace Swift type inference Swift uses type inference to help you write clean, concise code without compromising type safety. We'll show you how the compiler seeks out clues in your code to solve the type inference puzzle. Discover what happens when the compiler can't come to a solution, and find out how Xcode 12 integrates... WWDC20

16:24

Get your test results faster

WWDC20

Get your test results faster Improve your testing suite to speed up your feedback loop and get fixes in faster. Learn more about the latest improvements to testing in Xcode, including how to leverage test plans, Xcodebuild updates, and APIs to eliminate never-ending and badly-behaved tests. We'll explore Test Timeouts and... WWDC20

18:39

Control training in Create ML with Swift

WWDC20

Control training in Create ML with Swift With the Create ML framework you have more power than ever to easily develop models and automate workflows. We'll show you how to explore and interact with your machine learning models while you train them, helping you get a better model quickly. Discover how training control in Create ML can... WWDC20

27:31

Safely manage pointers in Swift

WWDC20

Safely manage pointers in Swift Come with us as we delve into unsafe pointer types in Swift. Discover the requirements for each type and how to use it correctly. We'll discuss typed pointers, drop down to raw pointers, and finally circumvent pointer type safety entirely by binding memory. This session is a follow-up to "Unsafe... WWDC20

36:15

Data Essentials in SwiftUI

WWDC20

Data Essentials in SwiftUI Data is a complex part of any app, but SwiftUI makes it easy to ensure a smooth, data-driven experience from prototyping to production. Discover @State and @Binding, two powerful tools that can preserve and seamlessly update your Source of Truth. We'll also show you how ObservableObject lets you... WWDC20

42:42

Refine Objective-C frameworks for Swift

WWDC20

Refine Objective-C frameworks for Swift Fine-tune your Objective-C headers to work beautifully in Swift. We'll show you how to take an unwieldy Objective-C framework and transform it into an API that feels right at home. Learn about the suite of annotations you can use to provide richer type information, more idiomatic names, and... WWDC20

8:08

Swan's Quest, Chapter 4: The sequence completes

WWDC20

Swan's Quest, Chapter 4: The sequence completes Swift Playgrounds presents "Swan's Quest,” an interactive adventure in four chapters for all ages. It's time for the grand finale: You've honed your skills with tones, but in this chapter our Hero needs to sequence multi-part harmony. Discover how to play pitched instruments with MIDI codes, and... WWDC20

23:12

Meet WidgetKit

WWDC20

Meet WidgetKit Meet WidgetKit: the best way to bring your app's most useful information directly to the home screen. We'll show you what makes a great widget and take a look at WidgetKit's features and functionality. Learn how to get started creating a widget, and find out how WidgetKit leverages the power of... WWDC20

19:08

Stacks, Grids, and Outlines in SwiftUI

WWDC20

Stacks, Grids, and Outlines in SwiftUI Display detailed data in your SwiftUI apps more quickly and efficiently with improved stacks and new list and outline views. Now available on iOS and iPadOS for the first time, outlines are a new multi-platform tool for expressing hierarchical data that work alongside stacks and lists. Learn how... WWDC20

33:42

Structure your app for SwiftUI previews

WWDC20

Structure your app for SwiftUI previews When you use SwiftUI previews during development, you can quickly create apps that are more flexible and maintainable. Discover ways to improve the preview experience by making small tweaks to your project. Find out how to preview multiple files at once, how to manage data flow for previews, and... WWDC20

12:02

Build document-based apps in SwiftUI

WWDC20

Build document-based apps in SwiftUI Learn how to build a document-based app entirely in SwiftUI! We'll walk you through the DocumentGroup API and how it composes with your App and Scenes, allowing you to add out-of-the-box support for document management — such as document browsing and standard commands — no heavy lifting required... WWDC20

15:18

Widgets Code-along, part 2: Alternate timelines

WWDC20

Widgets Code-along, part 2: Alternate timelines Our code-along continues as we help our widget rewrite the future and travel into an alternate timeline. Continue where you left off from Part 1, or traverse time and space and begin with the Part 2 starter project to jump right into the action. Find out how you can integrate system intelligence... WWDC20

17:55

Write tests to fail

WWDC20

Write tests to fail Plan for failure: Design great tests to help you find and diagnose even the toughest bugs. Learn how to improve your automated tests with XCTest to find hidden issues in even the best code. We'll explain how to prepare your tests for failure to make triaging issues easier, letting you solve... WWDC20

9:06

Widgets Code-along, part 3: Advancing timelines

WWDC20

Widgets Code-along, part 3: Advancing timelines Take your widget to the next level as we embark upon the third and final stage of the widgets code-along. Pick up where you left off in Part 2 or start with the Part 3 starter project to go warp speed ahead. We'll explore advanced concepts for widgets, timelines, and configuration. Learn how to... WWDC20

5:59

Swan's Quest, Chapter 3: The notable scroll

WWDC20

Swan's Quest, Chapter 3: The notable scroll Swift Playgrounds presents "Swan's Quest,” an interactive adventure in four chapters for all ages. Calling all musicians! In this chapter, our Hero has found a mysterious scroll of music, and only you can help decode it. (Don't worry if you can't read music, our clever Lizard is standing by to... WWDC20

15:29

App essentials in SwiftUI

WWDC20

App essentials in SwiftUI Thanks to the new App protocol, SwiftUI now supports building entire apps! See how Apps, Scenes, and Views fit together. Learn how easy it is to implement the features people expect from a best-in-class product while saving time and reducing complexity. Easily add expected functionality to your... WWDC20

22:50

Unsafe Swift

WWDC20

Unsafe Swift What exactly makes code “unsafe”? Join the Swift team as we take a look at the programming language's safety precautions — and when you might need to reach for unsafe operations. We'll take a look at APIs that can cause unexpected states if not used correctly, and how you can write code more... WWDC20

9:05

Widgets Code-along, part 1: The adventure begins

WWDC20

Widgets Code-along, part 1: The adventure begins Take your app on a most wondrous adventure to the home and Today screens of iPhone, iPad, and Mac. Grab the starter project and code along with us! We will guide you through the process of creating a widget for your app from start to finish so that you can provide people with beautiful views and... WWDC20

15:24

Explore numerical computing in Swift

WWDC20

Explore numerical computing in Swift Meet Swift Numerics: a new Swift package for computational mathematics. Take a tour of the protocols and types available in the package and find out how you can use them to write generic code. We'll also show you how and when to use the new Float16 type to improve performance and reduce memory... WWDC20

7:47

Distribute binary frameworks as Swift packages

WWDC20

Distribute binary frameworks as Swift packages Discover how you can add third-party frameworks to your app and keep them up to date using Swift packages in Xcode. We'll show you how to author packages that reference frameworks, explain binary targets and how to specify them in your package manifest file, and demonstrate how to compute... WWDC20

8:29

Create Swift Playgrounds content for iPad and Mac

WWDC20

Create Swift Playgrounds content for iPad and Mac Learn how to create Swift Playgrounds books that work fluidly across both Mac and iPad and help people of all ages explore the fun of coding in Swift. We'll walk you through how to customize content for each platform while considering platform settings, and help you take advantage of them in your... WWDC20

32:19

What's new in Swift

WWDC20

What's new in Swift Join us for an update on Swift. Discover the latest advancements in runtime performance, along with improvements to the developer experience that make your code faster to read, edit, and debug. Find out how to take advantage of new language features like multiple trailing closures. Learn about... WWDC20

12:38

Triage test failures with XCTIssue

WWDC20

Triage test failures with XCTIssue Put your test failures to work: Learn how to triage and diagnose uncaught issues in your app using the latest testing APIs in Xcode. We'll show you how to help ease your testing workflow and put failures into context to help you deliver the best quality product. For more information on designing... WWDC20

14:43

Swan's Quest, Chapter 1: Voices in the dark

WWDC20

Swan's Quest, Chapter 1: Voices in the dark Swift Playgrounds presents "Swan's Quest,” an interactive adventure in four chapters for all ages. In this chapter, our Hero must navigate a dark cave — and the only way to light the torches is to make them accessible. Learn about VoiceOver and write interesting audio descriptions. You just... WWDC20

14:14

Build a SwiftUI view in Swift Playgrounds

WWDC20

Build a SwiftUI view in Swift Playgrounds Easily prototype and play around with SwiftUI views when you use them with Swift Playgrounds. We'll show you how to build a SwiftUI view in a Xcode-compatible playground, and explore tools to help you easily edit and preview your code. For more on Swift Playgrounds, check out our interactive... WWDC20

54:38

Introduction to SwiftUI

WWDC20

Introduction to SwiftUI Explore the world of declarative-style programming: Discover how to build a fully-functioning SwiftUI app from scratch as we explain the benefits of writing declarative code and how SwiftUI and Xcode can combine forces to help you build great apps, faster. WWDC20

20:22

Build SwiftUI views for widgets

WWDC20

Build SwiftUI views for widgets Widgets are bite-sized pieces of information from your app that someone can choose to place on their home screen or Today view. Discover the process of building the views for a widget from scratch using SwiftUI. Brush up on the syntax that you'll need for widget-specific construction and learn... WWDC20

41:19

Swift Playgrounds 3

WWDC19

Swift Playgrounds 3 Introducing Swift Playgrounds 3: the latest iteration of the revolutionary app for iPad that makes coding in Swift interactive and fun. Discover how you can use your own playgrounds to rapidly iterate on code that uses device features. Find out how the new modules feature both helps organize your... WWDC19

36:44

What's New in Swift

WWDC19

What's New in Swift Swift is now the language of choice for a number of major frameworks across all of Apple's platforms, including SwiftUI, RealityKit and Create ML. Join us for a review of Swift 5.0 and an exploration of Swift 5.1, new in Xcode 11. Find out about the latest advancements in performance and safety... WWDC19

20:59

Introducing Accelerate for Swift

WWDC19

Introducing Accelerate for Swift Accelerate framework provides hundreds of computational functions that are highly optimized to the system architecture your device is running on. Learn how to access all of these powerful functions directly in Swift. Understand how the power of vector programming can deliver incredible... WWDC19

33:24

Adopting Swift Packages in Xcode

WWDC19

Adopting Swift Packages in Xcode Swift packages are a great way to organize and share code, and are now supported while building apps for all Apple platforms in Xcode 11. Find out how to use community-developed packages in your project, how Swift packages are structured, and how package versioning and dependencies work. WWDC19

40:32

Binary Frameworks in Swift

WWDC19

Binary Frameworks in Swift Xcode 11 now fully supports using and creating binary frameworks in Swift. Find out how to simultaneously support devices and Simulator with the new XCFramework bundle type, how Swift module interfaces work, and how to manage changes to your framework over time. WWDC19

41:06

Modern Swift API Design

WWDC19

Modern Swift API Design Every programming language has a set of conventions that people come to expect. Learn about the patterns that are common to Swift API design, with examples from new APIs like SwiftUI, Combine, and RealityKit. Whether you're developing an app as part of a team, or you're publishing a library for... WWDC19

31:05

Creating Swift Packages

WWDC19

Creating Swift Packages Whether you want to publish code to share with the community, or you just want a convenient way to organize the code in your apps, Swift packages are here to help. Learn how to create local packages for your own development, how to customize your package via the manifest file, and how to go about... WWDC19

39:48

Building Faster in Xcode

WWDC18

Building Faster in Xcode Build your apps faster in Xcode 10. Learn how to structure your projects and tweak your code to take full advantage of all processor cores. Whether you've made a few small code changes you want to give a try, or you're building your full app for release, these techniques will cut the time it... WWDC18

36:38

Getting to Know Swift Package Manager

WWDC18

Getting to Know Swift Package Manager The Swift Package Manager makes it possible to easily develop and distribute source code in the Swift ecosystem. Learn about its goals, design, unique features, and the opportunities it has for continued evolution. WWDC18

40:09

SceneKit in Swift Playgrounds

WWDC17

SceneKit in Swift Playgrounds Discover tips and tricks gleaned by the Swift Playgrounds Content team for working more effectively with SceneKit on a visually rich app. Learn how to integrate animation, optimize rendering performance, design for accessibility, add visual polish, and understand strategies for creating an... WWDC17

39:51

Protocol and Value Oriented Programming in UIKit Apps

WWDC16

Protocol and Value Oriented Programming in UIKit Apps Building on last year's Protocol-Oriented Programming and Building Better Apps with Value Types sessions, this year's session will highlight tips and tricks for building better Swift apps. See how you can incorporate these design approaches into a real MVC-based Cocoa Touch app, especially in the... WWDC16

58:22

Understanding Swift Performance

WWDC16

Understanding Swift Performance In this advanced session, find out how structs, classes, protocols, and generics are implemented in Swift. Learn about their relative costs in different dimensions of performance. See how to apply this information to speed up your code. WWDC16

35:41

Concurrent Programming With GCD in Swift 3

WWDC16

Concurrent Programming With GCD in Swift 3 Swift 3 provides new interfaces that make it easier than ever to write applications with Grand Central Dispatch. Learn the basics of GCD and best practices on how to use it to architect your Swift application. You'll also hear about new APIs and other GCD improvements. WWDC16

35:40

Swift and Objective-C Interoperability

WWDC15

Swift and Objective-C Interoperability Discover new features that make it easier than ever to craft Objective-C APIs that work beautifully in Swift, as well as new Swift language features that provide even better interoperability. Apple engineers will also discuss enhancements to Apple's SDKs that improve the Swift experience. WWDC15