Ben Cohen, manager of the Swift team at Apple, joins John on this WWDC22 special to discuss Swift 5.7, how generics have been made more powerful and easy to use, and how the language is expected to evolve towards Swift 6.
Conversations about Swift and beyond, featuring a stellar cast of special guests.
All episodes are 100% self-contained. Listen to as many as you want, in whichever order you want.
Ben Cohen, manager of the Swift team at Apple, joins John on this WWDC22 special to discuss Swift 5.7, how generics have been made more powerful and easy to use, and how the language is expected to evolve towards Swift 6.
Chris Eidhof returns to the podcast to talk about how SwiftUI has evolved since its initial release, to share several key learnings from using it over the past few years, and to discuss concepts like app architecture and state management.
Simon Støvring returns to the show to talk about how he built his new text editor Runestone, how to effectively manage an app’s settings, performance tuning, and implementing an app’s core logic as a stand-alone framework.
Sommer Panage returns to the show to discuss Apple’s various accessibility APIs and tools, how to incorporate accessibility support into a team’s overall development workflow, and what it was like being an engineering manager at Apple.
On this 2022 season premiere, JP Simard returns to the show to discuss what’s next for Swift in 2022, and what kinds of improvements and new features that might be coming to the language during the year.
To wrap up the 2021 season of the show, John revisits some of the key themes and topics that were discussed both on the show itself, and within the Swift community in general, throughout the year.
James Thomson returns to the show to discuss the various technologies that enable us to render custom UIs on Apple’s platforms. From rendering views using Core Graphics and Core Animation, to building completely custom 3D-based UIs using SceneKit and RealityKit.
Tim Condon joins John to discuss how both client and server-side Swift developers could utilize the new built-in concurrency system, as well as how distributed actors and other upcoming language features might continue to make Swift even more capable on the server.
Nick Lockwood joins John for a discussion about maintaining Swift code bases — from open source projects, to ones worked on by teams of various sizes. Also, the design of ShapeScript, using async/await within unit tests, and much more.
Marin Todorov returns to the podcast to discuss Swift’s new concurrency system and its newly announced backward compatibility, his new book about that topic, and his work on Apple’s open source documentation tool, Swift-DocC.
Ben Scheirman returns to the show to talk about modern UIKit-based app development, how UIKit has evolved over the past few years, and how its API design and usage has been influenced by the introduction of frameworks like SwiftUI and Combine.
Christian Selig returns to the show to talk about how he used the new Safari extension system on iOS to build Amplosion and Achoo, the pros and cons of open source, and how developers can utilize other iOS 15 and iPhone hardware features.
Marcin Krzyzanowski returns to the show to talk about building editors for Swift code, backend-driven user interfaces, and more. Also, the challenges of working with text-based data, the pros and cons of composition, and managing hobby projects.
Roxana Jula joins John to discuss Apple’s various tools, frameworks, and APIs for building Augmented Reality experiences. How to get started building AR-based apps, what’s the current state of AR on Apple’s platforms, and how might that change if Apple were to introduce dedicated AR hardware in the future?
Antoine van der Lee, creator of SwiftLee, joins John to discuss the new language features that are being introduced as part of Swift 5.5 — from the brand new concurrency system, to convenience features and various improvements.
Jordan Morgan returns to the show to discuss some of the key new APIs and frameworks that were announced at WWDC21, and how they can be integrated into the apps that we build, now that about two months have passed since the conference took place.
Malin Sundberg joins John to talk about her experiences of using SwiftUI to build and ship the time-tracking and invoicing app Orbit on most of Apple’s platforms, and what sort of things that can be good to keep in mind when using SwiftUI in a cross-platform context.
Chris Lattner returns to the show to discuss Swift’s new concurrency features, the ongoing evolution of the language, and the importance of both language and API design. This, and much more, on this special 100th episode of the show.
Doug Gregor from Apple joins John to discuss Swift 5.5’s new concurrency features in great detail. How do features like async/await and actors work under the hood, and how were those concepts adapted in order to feel right at home within Swift’s existing ecosystem? That, and much more, on this WWDC21 special episode of the show.
Sean Allen returns to the show to talk about using the MVVM design pattern within SwiftUI-based apps, building a course around MapKit and CloudKit, how to approach all of the new material that WWDC has to offer, and what goes into making a really great developer portfolio.
Ish ShaBazz returns to the show for a special pre-WWDC episode about what new APIs and developer tools that Apple might announce at this year’s edition of the conference. What’s in store for Swift and SwiftPM, how might UIKit and SwiftUI continue to evolve, and will this be the year when we’ll finally see Apple’s new AR/VR platform?
Adam Bell returns to the show to talk about animations, both how to make great use of the built-in animation tools that the iOS SDK ships with, but also how to drive custom, gesture-driven animation logic and the sort of performance optimizations that are typically required when writing that sort of code.
Brent Simmons returns to the show to discuss multi-threading and concurrency, and how to make good use of tools like Grand Central Dispatch. Also, building NetNewsWire in the open, the current state of SwiftUI, and the type of responsibilities that senior developers typically have.
Benedikt Terhechte returns to the show to discuss the pros and cons of using technologies like Catalyst and SwiftUI to build Mac apps, and also to share tips and tricks on how to use AppKit for use cases that Apple’s more modern frameworks do not yet support.
Donny Wals, book author and iOS developer at Disney Streaming Services, joins John to give practical tips on Combine and Core Data. How to manage and test increasingly complex Combine pipelines, and how come the opinions on Core Data are so divisive? Also, working on internal SDKs and frameworks, and taking a pragmatic approach to unit testing.
Kaitlin Mahar, lead engineer at MongoDB and member of the Swift Server Work Group, joins John to discuss the current state of server-side Swift, designing APIs for server-side libraries, and Swift’s upcoming suite of structured concurrency features.
David Smith, creator of apps like Widgetsmith, returns to the show to discuss whether SwiftUI is currently capable and stable enough to build production-level apps, and what sort of things that can be good to keep in mind when starting to deploy SwiftUI in production.
Matt Gallagher, creator of Cocoa with Love, returns to the show to discuss how the introduction of SwiftUI and Combine has impacted how apps are architected on Apple’s platforms, and what sort of principles that are good to keep in mind when designing a solid app architecture.
Ellen Shapiro returns to the show to discuss framework and SDK development, and how that often requires a somewhat different process from app development. Also, API design, GraphQL, using the standard library’s protocol-oriented design, and more.
On this special episode of the show, John wraps up the 2020 season by revisiting some of the key themes and topics that were discussed on the show during the year.
Chris Eidhof returns to the show to go on a deep dive into the SwiftUI layout system. What are the different phases involved in determining a given view’s layout, how do concepts like layout priorities and flexibility work, and what makes SwiftUI different from UIKit and AppKit in terms of layout?
Daniel Steinberg joins John to discuss how various functional programming patterns can be adopted in Swift, and how many of those patterns can be found in both the standard library and in frameworks like Combine and SwiftUI.
James Thomson, creator of PCalc, returns to the show to discuss how developers can bring their apps to multiple Apple platforms using technologies like Catalyst and SwiftUI, and how and when it can be a good idea to share code across platforms.
Vincent Pradeilles joins John to discuss various ways to use Swift language features like key paths and closures, how they relate to patterns typically used within functional programming, and when and how to adopt such patterns.
Simon Støvring, the developer behind several powerful iOS productivity apps, including Scriptable, joins John on an episode all about the new home screen widgets introduced in iOS 14. Topics include how to create and update dynamic widgets, managing and sharing data between an app and its widgets, and much more.
Jordan Singer joins John to discuss various approaches of turning designs into fully implemented UIs, how to manage things like mock data during the development process, and when to turn a given view into a reusable component. Also, the story behind the Airport app and Jordan’s recent SwiftUI experiments.
Carola Nitz, iOS developer at Netflix, joins John to discuss how larger iOS development teams typically operate, and how smaller teams can prepare their code bases for future growth. Also, organizing remote conferences, balancing feature development with bug fixing, and much more.
Nick Lockwood returns to the show to go on a deep dive into data structures and algorithms, what some of the pros and cons of writing high-performance code in Swift are, and how all of that relates to parallelization and performance.
Ben Scheirman, creator of NSScreencast, joins John on an episode all about UICollectionView. How have UICollectionView’s features evolved over time, and how are modern APIs like compositional layouts and diffable data sources changing the way collection views are built and used?
JP Simard returns to the show to discuss Swift 5.3’s main new features and improvements, and what those changes might tell us about the current state of Swift and its evolution process.
Jordan Morgan joins John to discuss various strategies for adopting new system features and APIs, how to keep up with the rapid changes to iOS, macOS and Apple’s other platforms, and how to allocate time between different projects.
Josh Shaffer and Eliza Block from Apple join John to talk about what’s new in SwiftUI, how Xcode Previews work under the hood, the new home screen widget system, Apple’s internal process of adopting and improving SwiftUI, and much more.
Dave Verwer and Sven A. Schmidt join John to talk about their newly launched Swift Package Index, and what the overall state of Swift’s package ecosystem currently is. Also, dependency management, composing libraries, deploying server-side Swift in production, and much more.
On this special episode, John is joined by the entire team behind the award-winning apps Halide and Spectre, Apple’s 2019 App of the Year. Ben, Sebastiaan and Rebecca share their stories of how these apps came to life, how they’re working together between design and development, and how technologies like Computational Photography and Augmented Reality are influencing their work.
Kyle Lee, also known as Kilo Loco, joins John to go behind the scenes of Publish — the static site generator used to build Swift by Sundell. Also, how to make a code base accessible to new team members, learning from open source, getting started with Swift-based web development, and much more.
Tobias Due Munk joins John to talk about using SwiftUI to build prototypes, how third party developers can extend SwiftUI’s built-in APIs in various ways, and to discuss the challenges of writing highly dynamic systems in Swift.
Dave Abrahams joins John to talk about Protocol-Oriented Programming and how to make the most out of the Swift Standard Library. Also, discussions on Swift’s overall design, why it puts such a strong emphasis on value types and protocols, and how it’s been influenced by other languages.
Christian Selig, creator of the Apollo Reddit app, joins John to talk about building apps against third party APIs, and what sort of criteria an app needs to meet to be considered a “good platform citizen”. Also, REST vs GraphQL, architecting API clients, and more.
Holly Borla and Grace Kendall, both software engineers at Apple, join John to go on a deep dive into the Swift Playgrounds app and Swift 5.2’s new diagnostics engine. Also, how Swift Playgrounds was ported to the Mac using Catalyst, and Swift’s role in education and as a language for beginners.
Leah Culver, co-founder and CTO of the Breaker podcast app, joins John to talk about her journey from iOS developer to startup founder, building MVPs and prototypes, iterating on and maintaining a code base, and growing a development team. Lots of tips and learnings about everything from app architecture to hiring.
Ryan Nystrom returns to the show accompanied by designer Brian Lovin, to go behind the scenes of the new GitHub mobile app which the two have been building. Also, creating a design system, building custom controls, and more discussions on how developers and designers can work better together.
Meng To, founder of Design+Code, joins John to go on a deep dive into SwiftUI from a design perspective, and to talk about how developers and designers can build scalable and flexible UIs using it. Also, structuring view code and components, the power of modifiers, and how SwiftUI compares to other UI tools and platforms.
On this special Stacktrace cross-over episode of the show, Gui Rambo joins John to talk about building custom developer tools, how open Apple’s tooling really is, writing “Swifty” code versus shipping great user experiences, and much more.
Sean Allen joins John to kick off the fourth season of the show, by talking about interview processes, goal setting, prioritizing projects, and what we might expect from Swift and Apple’s developer tools in 2020.
iOS developers and bloggers Donny Wals and Antoine van der Lee join John to wrap up the third season of the show with this year’s Holiday Special. How has Swift changed in 2019, and where might things be headed in 2020? Also, wishes for Xcode Santa, blogging and open source, and much more.
Kate Castellano joins John to discuss how views and UIs can be made more dynamic and data-driven, and how that could even enable certain views to get their entire layout configuration from the server. Also, view models, handling loading states, and much more.
Tim Condon, server-side Swift developer, writer and conference organizer, joins John to talk about all things networking. From organizing and abstracting networking code on the client-side, to using Swift on the server, and how to combine the two in order to write Swift end-to-end.
Indie iOS and watchOS developer “Underscore” David Smith joins John to discuss the current state of Apple Watch app development, and how SwiftUI is changing how watchOS apps are built. Also, managing and prioritizing multiple projects, Swift vs Objective-C, and whether SwiftUI is actually production-ready.
Josh Shaffer, engineering director with the UIKit and SwiftUI team at Apple, joins John to go on a deep dive into SwiftUI. What inspired the creation and design of SwiftUI, how does it impact the way apps are developed and architected, how is Apple using and improving SwiftUI internally, and much more.
John is joined by Paige Bailey and Brennan Saeta from the Swift for TensorFlow team at Google, to talk about the work they’re doing adopting and adapting Swift for Machine Learning. What makes Swift a good fit for this task, how might the language need to evolve to support this type of use cases even better, and much more.
Adam Bell joins John to talk about audio programming in Swift, and how SwiftUI makes rendering visual representations of audio and other custom shapes easier than ever before. Also, reverse engineering, mixing SwiftUI with UIKit and other view frameworks, and much more.
Ish ShaBazz joins John to talk about indie app development, planning and productivity, deciding which system features to adopt and what trends to follow, what’s new in Xcode 11 and Swift 5.1, and much more.
Marin Todorov joins John to talk about bridging the gap between UIKit, Combine and SwiftUI, how to design intuitive and robust APIs, and how the developer community can augment Apple’s SDKs through open source.
Benedikt Terhechte and Bas Broek join John to dive into iOS 13 and iPadOS, as well as Swift 5.1 — how it powers SwiftUI, and if it would be possible to backport parts of SwiftUI to earlier iOS versions. Also, text editors, new iPhone and iPad UI conventions, and more.
Longtime Apple platforms developer Brent Simmons joins John to discuss how SwiftUI is ushering in a new era for Apple’s developer tools, and how we as third party developers can prepare for it. Also, Mac development, lots of tips for writing efficient code, and dynamic programming in Swift.
Casey Liss joins John to talk about Apple’s newly announced Combine framework for reactive programming, how it compares to existing tools like RxSwift, and different strategies for adopting it. Also, unit testing, life as an indie developer, and much more.
Kaya Thomas joins John to talk about Apple’s various accessibility technologies and how SwiftUI is taking things to a whole new level. Also, how UI testing and accessibility are closely related, and what makes declarative UI development so powerful.
Chris Lattner, creator of Swift, joins John on this 50th episode of the show — to discuss the current state of Swift and how it came to be, as well as to speculate about what the future of the language and its ecosystem might look like.
It’s time for the 2019 Swift by Sundell WWDC special, featuring PCalc creator James Thomson — who, with his over 25 years of experience developing apps for Apple’s platforms, joins John to discuss SwiftUI, Catalyst, and the other exciting tools and frameworks introduced at this year’s WWDC.
Automation enthusiast and Scriptable developer Simon Støvring joins John to discuss automation, scripting, and building tools. Also, app modularity, frameworks, and what it would take to bring automation on Apple’s platforms to the next level.
iOS developer and YouTuber Mayuko Inoue joins John to discuss team work and how a solid code structure can make teams more productive. Other topics include goal setting, how to grow as an engineer, and contributing to open source.
Michael Ilseman, developer on the Swift team at Apple, joins John to go on a deep dive into the String type, its implementation, and its related APIs. Topics range from the way Swift’s String API is designed, to its underlying complexities, and practical performance tips.
Chris Eidhof and Matt Gallagher join John to discuss app architecture, RxSwift and Functional Reactive Programming, and how to decide what patterns, frameworks, and concepts to adopt when architecting and building an app.
Janina Kutyn, former Apple Music developer and now an iOS developer in Amsterdam, joins John for a UI development special! Topics include various techniques for building UIs and layouts, measuring and fixing performance problems, and supporting different screen sizes and devices.
Dave DeLong, former Apple developer evangelist and now iOS architect and instructor, joins John to talk about handling dates in code, MVC & app architecture, Mac development, and to tell stories of how WWDC is put together.
Ted Kremenek, manager of the Languages and Runtimes team at Apple, joins John to talk about Swift 5 — focusing on ABI stability and what it means for the future of the language, how the underpinnings of String have been improved in this release, how Apple is using Swift internally, and much more.
Dave Verwer joins John to take a look behind the scenes of the iOS Dev Weekly newsletter, to talk about working as an indie and how to increase your chances of success as an indie creator or developer, juggling multiple projects, as well as iOS development trends.
Ben Sandofsky, the developer behind the camera app Halide, joins John for this season 3 premiere of the show — to talk about designer/developer collaboration, what goes into building a camera app, iOS app architecture, handling dependencies, minimizing an app’s binary size, and much more.
JP Simard and Jesse Squires, the hosts of Swift Unwrapped, join John for this year's Holiday Special. Topics include ways that Swift has evolved during the year, what's coming up in Swift 5, maintaining open source projects, and continuing the tradition of sending wishes to Xcode Santa.
Kristina Fox, iOS and watchOS developer at Intuit, joins John to talk about Apple Watch development, building UI using storyboards vs in code, growing into a senior developer, and how to use change as a learning opportunity.
Ellen Shapiro joins John to talk about all sorts of automated testing — unit tests, integration tests, UI test, you name it! The two also discuss Ellen's recent adventures into Kotlin and whether Kotlin Native could become a nice cross-platform solution for mobile apps.
Max Howell, creator of Homebrew and PromiseKit, joins John to talk about package manager design, asynchronous programming, interview processes, and also to tell some stories of how the Swift Package Manager was born.
Rahul Malik of Pinterest joins John to talk about working on a large-scale iOS app, using third party build systems, client/server networking architectures and much more.
Brandon Williams and Stephen Celis, formerly iOS developers at Kickstarter and now hosts of Point-Free, join John to talk about functional programming in Swift, and how it can be used to build apps, websites, and even control the world.
Nick Lockwood, Core Animation veteran and creator of tools like SwiftFormat, joins John to talk about animations, layout, building parsers & compilers in Swift, declarative UI patterns and much more.
John heads to the Swift & Fika conference in Stockholm and, equipped with his portable recorder, speaks to four special guests about topics ranging from security to rendering performance to static analysis.
Felix Krause, creator of fastlane, joins John to talk about building developer tools, scaling open source projects, automation, code signing, how fastlane came to be, and how to take the perfect Twitter profile picture.
Sean Allen, YouTuber and host of Swift News, joins John to talk about sharing, creating content for the Swift community, mentoring and giving feedback, teaching new technologies, interviewing and much more.
Niels van Hoorn of Framer joins John to talk about prototyping, experimentation and learning new technologies. When and how to use prototypes, trying out new frameworks and techniques, the value of building your own tools and much more.
Peter Steinberger, creator and CEO of PSPDFKit, joins John to talk about building and maintaining a large framework project, how PSPDFKit came to be, how his team works with Radar, and all the challenges and excitement that comes with running a business based on a closed source SDK.
Ryan Nystrom of Instagram joins John to talk about data-driven UI development, working on open source, how to optimize performance, becoming an engineering manager and much more.
David Hart, regular contributor to the Swift Package Manager, joins John to discuss the present and future of the SwiftPM project - how to get started both using and contributing to it, and how it lets the community build tools on top of it.
Ben Scheirman, creator of NSScreencast, joins John for a special WWDC episode of the show — to talk about the cool new things that Apple announced at the conference. iOS 12's focus on performance, UIKit apps on the Mac, what's new in Xcode and Swift 4.2, and much more.
Carola Nitz joins John to talk about LLDB and debugging, her work on the open source VLC app, how she got her previous job at Apple, and much more.
Harlan Haskins and Robert Widmann, who are both regular contributors to the Swift compiler, join John to take a deep dive into the internals of Swift, its type system, the compilation process and how they used LLVM to build their own programming language.
Meghan Kane joins John for a special Machine Learning episode of the show — talking about how to get started with tools like CoreML and TensorFlow, what they can be used for, deciphering the terminology, how Swift might be used for ML tooling in the future, and much more!
Benedikt Terhechte joins John to talk about Mac development, working as an indie developer, code sharing between Apple's platforms, extending the standard library, system packages, and much more.
Radek Pietruszewski, software writer at Nozbe and creator of SwiftyUserDefaults, joins John to talk about developer seniority, being inspired by the React paradigm, singletons & dependency injection, micro features and much more.
Erica Sadun joins John to talk about Swift Evolution and its proposal process, civility in the community, the state of Apple's developer tools, protocol extensions, Swift Foundation vs Objective-C Foundation and much more.
Tanner Nelson, creator of the Vapor web framework, joins John to talk about the present & future of server-side Swift, designing Vapor’s API, Apple’s new SwiftNIO project, marrying the concepts of Swift with the web, and much more.
Janie Clayton, author of the Metal Programming Guide, joins John to talk about Metal, GPU & graphics programming, shaders, when to dive into lower levels of abstraction, and much more.
Sommer Panage joins John to talk about all things accessibility, adaptive UIs, learning new APIs, UI testing, her secret (well, not so secret) life as a circus artist, and much more.
Chris Eidhof, founder of objc.io and co-host of Swift Talk, joins John to talk about app architecture, functional programming, the "rockstar developer culture", picking database solutions and much more.
Tobias Due Munk, creator of Slør, Nataliya Patsovska from iZettle and Patrick Balestra, co-organizer of the Swift Alps & AppBuilders conferences, join John on this special holiday episode of the show! Personal stories about learning new technologies, staying motivated, profound career moments, conferences, wishes for Xcode Santa and much more.
Orta Therox from Artsy joins John to talk about building developer tools, working on and maintaining open source projects, React Native, balancing coding time with personal time and much more.
Matthias Tretter of MindNode joins John to talk about Auto Layout, working on the iPad, refactoring Massive View Controllers, dealing with old code and much more.
Mike Ash joins John to talk about reference counting, learning new APIs, Swift tooling vs new language features, what if Swift would've been Objective-C 3.0, and much more.
Soroush Khanlou joins John to talk about blogging, MVVM and other iOS architecture patterns, unit testing, new features in iOS 11 & Xcode 9 and much more.
Paul Hudson of Hacking with Swift joins John to talk about learning & teaching Swift, Storyboards vs XIBs vs code, game development, Swift on the server and much more.
Marin Todorov and Florent Pillet, two of the four authors of Ray Wenderlich's RxSwift book, join John to talk about Rx, reactive programming, debugging, learning new technologies and much more.
Gui Rambo joins John to talk about reverse engineering, finding product details in leaked Apple firmware & SDKs, getting started with Mac development & open source, and much more.
Agnes Vasarhelyi of Topology Eyewear joins John to talk about moving to San Francisco, AR, architecture, getting started with iOS development and much more.
Louis D'hauwe joins John to answer questions about architecture, UI design, compilers, creating a programming language and much more.
Ash Furrow from Artsy joins John to answer questions about being inspired by other languages, asynchronous programming, doing test-driven development and much more.
Anastasiia Voitova and Marcin Krzyzanowski join John to answer questions about security and encryption in Swift. Topics range from cryptography frameworks and algorithms to how to protect keys and user data and avoiding problems with SSL pinning.
Roy Marmelstein from Spotify joins John to answer questions about getting started with open source, expressive code, working in a large development team, using RxSwift at scale and more. He also speaks about his first 6 months at Spotify and his work building prototypes for new ideas and products.
In this first episode of the Swift by Sundell podcast — John gives an introduction to the show’s concept and answers the first set of questions, submitted by members of the Swift community.