Swift by Sundell

By John Sundell

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In-depth conversations about Swift and software development in general, hosted by John Sundell.

Episode Date
76: “A huge year for SwiftUI”, a WWDC20 special with Josh Shaffer and Eliza Block
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.
Jun 30, 2020
75: “The Swift package ecosystem”, with special guests Dave Verwer and Sven A. Schmidt
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 sever-side Swift in production, and much more.
Jun 19, 2020
74: “Let’s build a camera app”, a conversation with the Halide and Spectre team
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.
Jun 04, 2020
73: “Truly a general-purpose language”, with special guest Kilo Loco
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.
May 19, 2020
72: “Many layers of SwiftUI”, with special guest Tobias Due Munk
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.
May 07, 2020
71: “Polymorphic interfaces”, with special guest Dave Abrahams
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.
Apr 23, 2020
70: “Risks and rewards”, with special guest Christian Selig
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.
Apr 09, 2020
69: “Swift Playgrounds”, with special guests Holly Borla and Grace Kendall
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.
Mar 24, 2020
68: “MVPs and prototypes”, with special guest Leah Culver
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.
Mar 12, 2020
67: “Building for open source”, with special guests Ryan Nystrom and Brian Lovin
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.
Feb 25, 2020
66: “Bridging the gap”, with special guest Meng To
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.
Feb 13, 2020
65: “Tools are just apps”, with special guest Gui Rambo
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.
Jan 30, 2020
64: “Earning the deeper look”, with special guest Sean Allen
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.
Jan 15, 2020
63: “It’s been a wild year”, a Holiday Special with Donny Wals and Antoine van der Lee
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.
Dec 19, 2019
62: “Backend-driven UIs”, with special guest Kate Castellano
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.
Dec 05, 2019
61: “End-to-end Swift”, with special guest Tim Condon
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.
Nov 22, 2019
60: “Deploying SwiftUI in production”, with special guest David Smith
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.
Nov 07, 2019
59: “A major step forward”, a SwiftUI special with Josh Shaffer
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.
Oct 22, 2019
58: “Swift for Machine Learning”, with special guests Paige Bailey and Brennan Saeta
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.
Oct 08, 2019
57: “Audio and Swift”, with special guest Adam Bell
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.
Sep 24, 2019
56: “The power of software”, with special guest Ish ShaBazz
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.
Sep 13, 2019
55: “A whole new world”, with special guest Marin Todorov
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.
Aug 30, 2019
54: “Swift 5.1, iOS 13 and iPadOS”, with special guests Benedikt Terhechte and Bas Broek
Benedikt Terhechte and Bas Broek join John to dive into the new APIs and features in 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 much more.
Aug 13, 2019
53: “The Swift Apple”, with special guest Brent Simmons
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 how Swift is adopting more dynamic programming features.
Aug 01, 2019
52: “Diving into Combine”, with special guest Casey Liss
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.
Jul 18, 2019
51: “Accessibility is for everyone”, with special guest Kaya Thomas
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.
Jul 04, 2019
50: “Swift’s past, present and future”, with special guest Chris Lattner
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.
Jun 20, 2019
49: “A big buffet of frameworks”, with special guest James Thomson
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.
Jun 06, 2019
48: “Automate all the things”, with special guest Simon Støvring
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.
May 21, 2019
47: “Your North Star”, with special guest Mayuko Inoue
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.
May 09, 2019
46: “A desire for simplicity and performance”, with special guest Michael Ilseman
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.
Apr 23, 2019
45: “That’s why we refactor”, with special guests Chris Eidhof and Matt Gallagher
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.
Apr 09, 2019
44: “Pull up the time profiler”, with special guest Janina Kutyn
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.
Mar 29, 2019
43: “The temporal axis of space-time”, with special guest Dave DeLong
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.
Mar 14, 2019
42: “Pragmatic priorities”, with special guest Ted Kremenek
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.
Feb 26, 2019
41: “The ultimate small company”, with special guest Dave Verwer
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.
Feb 14, 2019
40: “Throwing a JPEG over a wall”, with special guest Ben Sandofsky
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.
Jan 29, 2019
39: “Sundell by Unwrapped”, a Holiday Special featuring JP Simard and Jesse Squires
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.
Dec 20, 2018
38: “Delete derived data in our sleep”, with special guest Kristina Fox
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.
Dec 06, 2018
37: “The test of time”, with special guest Ellen Shapiro
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.
Nov 21, 2018
36: “Promises everywhere”, with special guest Max Howell
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.
Nov 08, 2018
35: “Onion architecture”, with special guest Rahul Malik
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.
Oct 24, 2018
34: “Pure functions”, with special guests Brandon Williams and Stephen Celis
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.
Oct 12, 2018
33: “Everything is an animation”, with special guest Nick Lockwood
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.
Sep 27, 2018
32: “Rapid fire interviews”, with special guests Alek, Anastasiia, Janina & JP
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.
Sep 18, 2018
31: “Code signing, but for APIs”, with special guest Felix Krause
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.
Aug 29, 2018
30: “Do you wanna be my mentee?”, with special guest Sean Allen
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.
Aug 18, 2018
29: “Flexing your learning muscle”, with special guest Niels van Hoorn
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.
Aug 03, 2018
28: “Long-term code evolution”, with special guest Peter Steinberger
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.
Jul 19, 2018
27: “Exponential open source effect”, with special guest Ryan Nystrom
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.
Jul 04, 2018
26: “Bootstrap our way there”, with special guest David Hart
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.
Jun 22, 2018
25: “Segue into Marzipan”, with special guest Ben Scheirman
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.
Jun 07, 2018
24: “The definition of debugging”, with special guest Carola Nitz
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.
May 23, 2018
23: “Epic compiler quest”, with special guests Harlan Haskins and Robert Widmann
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.
May 10, 2018
22: “A path for learning”, with special guest Meghan Kane
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!
Apr 25, 2018
21: “The sweeter Mac app”, with special guest Benedikt Terhechte
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.
Apr 10, 2018
20: “A dependency injection kind of guy”, with special guest Radek Pietruszewski
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.
Apr 02, 2018
19: “Proposal tour”, with special guest Erica Sadun
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.
Mar 19, 2018
18: “It’s like The Matrix”, with special guest Tanner Nelson
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.
Mar 13, 2018
17: “Squirrel Syndrome”, with special guest Janie Clayton
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.
Mar 02, 2018
16: “Better than accessible”, with special guest Sommer Panage
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.
Feb 01, 2018
15: “My interpretation of functional programming”, with special guest Chris Eidhof
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!
Jan 22, 2018
14: “Holiday Special”, with special guests Tobias Due Munk, Nataliya Patsovska & Patrick Balestra
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.
Dec 22, 2017
13: “My DNA is on GitHub”, with special guest Orta Therox
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.
Dec 13, 2017
12: “A pretty good job for a view controller”, with special guest Matthias Tretter
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.
Nov 28, 2017
11: “Don’t use this for evil”, with special guest Mike Ash
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.
Nov 14, 2017
10: “Boy, I have a lot of thoughts on this”, with special guest Soroush Khanlou
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.
Nov 07, 2017
9: “The answer is YES”, with special guest Paul Hudson
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.
Oct 31, 2017
8: “Time traveling is always cool”, with special guests Marin Todorov and Florent Pillet
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.
Oct 19, 2017
7: “Spelunking the firmware”, with special guest Gui Rambo
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.
Sep 29, 2017
6: “Somewhere between the view and the model”, with special guest Agnes Vasarhelyi
Agnes Vasarhelyi of Topology Eyewear joins John to talk about moving to San Francisco, AR, architecture, getting started with iOS development and much more.
Sep 22, 2017
5: “Escape into the open source world”, with special guest Louis D'hauwe
Louis D'hauwe joins John to answer questions about architecture, UI design, compilers, creating a programming language and much more.
Sep 07, 2017
4: “Fake Canadian”, with special guest Ash Furrow
Ash Furrow from Artsy joins John to answer questions about being inspired by other languages, asynchronous programming, doing test driven development and much more.
Aug 30, 2017
3: “Talking with the server it’s supposed to”, with special guests Anastasiia Voitova and Marcin Krzyzanowski
Anastasiia Voitova & Marcin Krzyzanowski join John to answer questions about security & encryption in Swift. Topics range from cryptography frameworks & algorithms to how to protect keys and user data and avoiding problems with SSL pinning.
Aug 18, 2017
2: “It’s a lot like cleaning your house”, with special guest Roy Marmelstein
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.
Aug 08, 2017
1: “Hello world”
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.
Aug 02, 2017