Jeroen shares his real-world iOS development journey working on a legacy app at Dawn Technologies. He details his systematic approach to modernizing an 8-year-old codebase that serves as a critical tool for companies.

• Breaking down a monolithic App Delegate into dedicated managers with single responsibilities
• Leveraging the existing feature flag system to safely deploy new implementations
• Refactoring the walkie-talkie functionality with real-time audio streaming over WebSockets
• Completely rewriting the chat system to use a modern service-based architecture
• Overhauling the location tracking system to use iOS 17's new async location tracking APIs
• Implementing WiFi settings fixes for iOS 16 compatibility using modern APIs
• Maintaining a cleanup branch to remove deprecated APIs and fix compiler warnings

Check out Do iOS, the iOS development conference I'm organizing later this year. Visit do-ios.com for more information and tickets - link in the show notes.

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
Learn best practices for being a great lead software developer.

Support the show

Do iOS: https://do-ios.com

Rate me on Apple Podcasts.

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Or contact me:

• Mastodon: https://hachyderm.io/@appforce1
• X: https://x.com/appforce1
• BlueSky: https://bsky.app/profile/appforce1.net
• LinkedIN: https://www.linkedin.com/in/leenarts/

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Make sure to let me know what you think of this episode.

I completely refactored an audio system for a work app, splitting a single AVAudioEngine into separate engines for recording and playback. This architectural change fixed a bizarre bug where the system volume slider moved unexpectedly during audio operations.

• Split AVAudioEngine into separate recording and playback engines
• Fixed the MP Volume View movement issue by unifying audio session management
• Improved background task management for location tracking services
• Removed dead code and deprecated functionality
• Explored solutions for audio session conflicts, threading issues, and memory leaks
• Implemented dedicated dispatch queues for different audio operations
• Created a robust background task management system for location updates
• Added extensive logging to better understand audio session lifecycles

Looking ahead to SwiftUI integration, audio performance optimization, and iOS 26 compatibility testing. Do iOS 2025 is happening November 11-13 at NEMO Science Museum in Amsterdam - check out do-ios.com for more information.

Support the show

Do iOS: https://do-ios.com

Rate me on Apple Podcasts.

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Or contact me:

• Mastodon: https://hachyderm.io/@appforce1
• X: https://x.com/appforce1
• BlueSky: https://bsky.app/profile/appforce1.net
• LinkedIN: https://www.linkedin.com/in/leenarts/

Support my podcast with a monthly subscription, it really helps.

My book: Being a Lead Software Developer

Jeroen returns to AppForce One with a pivot to a new format focused on his journey back to iOS development after working in developer relations at Stream.

• Now working at Dawn Technology (formerly Egeniq), returning to hands-on iOS development
• Introducing "AppForce One Work Log" - a bi-weekly, 25-minute show sharing real development experiences
• No corporate speak or fluff - just honest developer-to-developer conversations about real coding challenges
• Each episode will include: week in review, code deep dives, tool discussions, and lessons learned
• Currently working on refactoring an 8-year-old UIKit app for emergency response (bedrijfshulpverlening)
• Excited about modernizing legacy code while keeping the app running for users who depend on it
• Organizing DoiOS 2025 conference in November with practical, real-world iOS development content
• Actively seeking listener feedback on what topics would be most valuable to cover

Reach out with your iOS development challenges on X, Mastodon, LinkedIn or through my website. I'm genuinely interested in your feedback and may feature your questions in future episodes.

Support the show

Do iOS: https://do-ios.com

Rate me on Apple Podcasts.

Send feedback on SpeakPipe
Or contact me:

• Mastodon: https://hachyderm.io/@appforce1
• X: https://x.com/appforce1
• BlueSky: https://bsky.app/profile/appforce1.net
• LinkedIN: https://www.linkedin.com/in/leenarts/

Support my podcast with a monthly subscription, it really helps.

My book: Being a Lead Software Developer

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
Learn best practices for being a great lead software developer.

Support the show

Do iOS: https://do-ios.com

Rate me on Apple Podcasts.

Send feedback on SpeakPipe
Or contact me:

• Mastodon: https://hachyderm.io/@appforce1
• X: https://x.com/appforce1
• BlueSky: https://bsky.app/profile/appforce1.net
• LinkedIN: https://www.linkedin.com/in/leenarts/

Support my podcast with a monthly subscription, it really helps.

My book: Being a Lead Software Developer

Drew is founder of The Mental Faculty, developer of Mental Case and the Ensembles sync framework. He works on Agenda. Agenda is an Apple design award winner, editor’s choice, and is featured a lot in the App Store, particularly for the Mac. Agenda made a switch to an interesting business model a while ago.

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
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Do iOS: https://do-ios.com

Rate me on Apple Podcasts.

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Or contact me:

• Mastodon: https://hachyderm.io/@appforce1
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• LinkedIN: https://www.linkedin.com/in/leenarts/

Support my podcast with a monthly subscription, it really helps.

My book: Being a Lead Software Developer

Rudrank and I talk about the things leading up to Do iOS, our failed attempt to get him to Amsterdam in 2022 and our second attempt this year.

We also talk a bit about conference organizing and some of the ways I am doing things.

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
Learn best practices for being a great lead software developer.

Support the show

Do iOS: https://do-ios.com

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Or contact me:

• Mastodon: https://hachyderm.io/@appforce1
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• LinkedIN: https://www.linkedin.com/in/leenarts/

Support my podcast with a monthly subscription, it really helps.

My book: Being a Lead Software Developer

Josh Holtz is back on my podcast to talk about his talk for Do iOS.

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
Learn best practices for being a great lead software developer.

Support the show

Do iOS: https://do-ios.com

Rate me on Apple Podcasts.

Send feedback on SpeakPipe
Or contact me:

• Mastodon: https://hachyderm.io/@appforce1
• X: https://x.com/appforce1
• BlueSky: https://bsky.app/profile/appforce1.net
• LinkedIN: https://www.linkedin.com/in/leenarts/

Support my podcast with a monthly subscription, it really helps.

My book: Being a Lead Software Developer

Donny Wals joins me on my podcast to talk about Do iOS. Why he's there and what he hopes to get from Do iOS.

More information on his workshop and Do iOS.
Learn more about Donny on his website.

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
Learn best practices for being a great lead software developer.

Support the show

Do iOS: https://do-ios.com

Rate me on Apple Podcasts.

Send feedback on SpeakPipe
Or contact me:

• Mastodon: https://hachyderm.io/@appforce1
• X: https://x.com/appforce1
• BlueSky: https://bsky.app/profile/appforce1.net
• LinkedIN: https://www.linkedin.com/in/leenarts/

Support my podcast with a monthly subscription, it really helps.

My book: Being a Lead Software Developer

In this episode I talk with SwiftDev. Someone who got into iOS development because he just likes programming and the apple platform seemed like the best place to start.His goal is to become an indie developer at some point. Supported by his family and network he is making small steps every week to get closer to this goal.

You can find and follow SwiftDev on Twitter.

He created two apps:

• Libraried: UI Components
• Money Time: WTF

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
Learn best practices for being a great lead software developer.

Support the show

Do iOS: https://do-ios.com

Rate me on Apple Podcasts.

Send feedback on SpeakPipe
Or contact me:

• Mastodon: https://hachyderm.io/@appforce1
• X: https://x.com/appforce1
• BlueSky: https://bsky.app/profile/appforce1.net
• LinkedIN: https://www.linkedin.com/in/leenarts/

Support my podcast with a monthly subscription, it really helps.

My book: Being a Lead Software Developer

Monika Mateska is a speaker at Do iOS. Listen in to learn more about her.

You can find Monika on LinkedIN and on Twitter/X.

More info on her VisionOS talk, see the Do iOS site.

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
Learn best practices for being a great lead software developer.

Support the show

Do iOS: https://do-ios.com

Rate me on Apple Podcasts.

Send feedback on SpeakPipe
Or contact me:

• Mastodon: https://hachyderm.io/@appforce1
• X: https://x.com/appforce1
• BlueSky: https://bsky.app/profile/appforce1.net
• LinkedIN: https://www.linkedin.com/in/leenarts/

Support my podcast with a monthly subscription, it really helps.

My book: Being a Lead Software Developer

Adam, Filip, Monika and me dive into some of the aspects of organizing a conference. You will probably be left with plenty of questions afterwards. Send them in.Also, this is based on our own experience, always consider your specific circumstances.

https://swiftleeds.co.uk/
https://do-ios.com/

Monika on Twitter
Filip on Twitter
Adam on Twitter

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
Learn best practices for being a great lead software developer.

Support the show

Do iOS: https://do-ios.com

Rate me on Apple Podcasts.

Send feedback on SpeakPipe
Or contact me:

• Mastodon: https://hachyderm.io/@appforce1
• X: https://x.com/appforce1
• BlueSky: https://bsky.app/profile/appforce1.net
• LinkedIN: https://www.linkedin.com/in/leenarts/

Support my podcast with a monthly subscription, it really helps.

My book: Being a Lead Software Developer

Welcome to my new format. I will mention the occasional news item if it is amazing. But I don't want to add to your burden during WWDC week too much. More on my thoughts on that next time.

This time some history on the biggest thing I am doing this year. A conference. Join me on my journey and learn what it takes to put together a conference for iOS App Developers.

https://do-ios.com

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
Learn best practices for being a great lead software developer.

Support the show

Do iOS: https://do-ios.com

Rate me on Apple Podcasts.

Send feedback on SpeakPipe
Or contact me:

• Mastodon: https://hachyderm.io/@appforce1
• X: https://x.com/appforce1
• BlueSky: https://bsky.app/profile/appforce1.net
• LinkedIN: https://www.linkedin.com/in/leenarts/

Support my podcast with a monthly subscription, it really helps.

My book: Being a Lead Software Developer

This episode's articles:

• Spinning Up a Feature Request Screen with Supabase
• Security in iOS Applications
• SwiftUI: Using a Repository as the single source of truth
• Tips and tricks for exploring a new codebase
• Grand Central Dispatch (GCD)
• Swift Evolution Monthly: March + April '23
• Simplify Time Comparisons in Swift with RelativeDateTimeFormatter
• Optimizing your app for Network Reachability
• Discover how @MainActor works

I also mention:

• Appdevcon is a conference by app developers, for app developers
• Deep Dish Swift
• CocoaHeadsNL
• Do iOS

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
Learn best practices for being a great lead software developer.

Support the show

Do iOS: https://do-ios.com

Rate me on Apple Podcasts.

Send feedback on SpeakPipe
Or contact me:

• Mastodon: https://hachyderm.io/@appforce1
• X: https://x.com/appforce1
• BlueSky: https://bsky.app/profile/appforce1.net
• LinkedIN: https://www.linkedin.com/in/leenarts/

Support my podcast with a monthly subscription, it really helps.

My book: Being a Lead Software Developer

Links in this episode:

• Build your own Twitter
• Real-World Xcode Project Using Tuist
• Linting Documentation with Vale to Increase Quality & Consistency
• Basic Stream Backend Integration using NodeJS
• Comparison of Cherry Brown and Gazzew U4 switches
• Skip typing your login credentials manually with Xcode breakpoints
• Native vs Web: Technologies Available to Native Apps but not Web Apps
• 3 mistakes to avoid with async / await
• Understanding unstructured and detached tasks in Swift
• What I Learned Writing My Own CloudKit Syncing Library
• Cyclomatic Complexity in Swift: Understanding How it Affect Your Code Quality

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
Learn best practices for being a great lead software developer.

Support the show

Do iOS: https://do-ios.com

Rate me on Apple Podcasts.

Send feedback on SpeakPipe
Or contact me:

• Mastodon: https://hachyderm.io/@appforce1
• X: https://x.com/appforce1
• BlueSky: https://bsky.app/profile/appforce1.net
• LinkedIN: https://www.linkedin.com/in/leenarts/

Support my podcast with a monthly subscription, it really helps.

My book: Being a Lead Software Developer

Links:

• Comparing Operators of Combine for iOS
• Planning Animations in SwiftUI
• SwiftUI Toolbar
• Automating Swift CLI releases with GitHub Actions
• GitHub webhooks 🤝 Xcode Cloud
• Show an Incoming Call on a Device
• Hide Sensitive Data When Device Is Locked?
• Tap Gestures on Widgets
• Swift Package Index Apple sponsorship
• Apple as a supporter of the Swift Package Index
• Multiplatform SwiftUI code
• Debug ASWebAuthenticationSession
• Web content with SFSafariViewController
• Swift Evolution Monthly
• Basics of structured concurrency in Swift
• iOS Confs in 2023

Other links:

• CocoaHeadsNL meetups 
• AppDevCon
• Build your own twitter project
• Article about Vale linting with steps on how to integrate with Xcode
• Commit about Vale in Stream's Chat S

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
Learn best practices for being a great lead software developer.

Support the show

Do iOS: https://do-ios.com

Rate me on Apple Podcasts.

Send feedback on SpeakPipe
Or contact me:

• Mastodon: https://hachyderm.io/@appforce1
• X: https://x.com/appforce1
• BlueSky: https://bsky.app/profile/appforce1.net
• LinkedIN: https://www.linkedin.com/in/leenarts/

Support my podcast with a monthly subscription, it really helps.

My book: Being a Lead Software Developer

Links

• TaskGroup error handling
• Filter debugger output
• Passkeys for iOS
• @available attribute
• Swift 5.9: Network reqs in Swift package plugins
• Users manage In-App Subs.
• ProgressView
• TabView
• Run and test async Vapor cmnds
• Tasks in parallel
• Order and Concurrency
• Share with UIActivityViewController
• Share breakpoints
• Sign in with Apple and AWS Amplify
• Animations with Mask View Modifier
• Sequential Animations
• Styling Components
• Pin SPM dependencies versions
• Charts. Customizations
• Charts. Interactions
• Multi-Cursor Editing
• SwiftUI Environment
• Detached Tasks

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
Learn best practices for being a great lead software developer.

Support the show

Do iOS: https://do-ios.com

Rate me on Apple Podcasts.

Send feedback on SpeakPipe
Or contact me:

• Mastodon: https://hachyderm.io/@appforce1
• X: https://x.com/appforce1
• BlueSky: https://bsky.app/profile/appforce1.net
• LinkedIN: https://www.linkedin.com/in/leenarts/

Support my podcast with a monthly subscription, it really helps.

My book: Being a Lead Software Developer

Shaun took me up on a request on Mastodon to come on my podcast.

We had a great conversation about how he ventured into management as a software developer. We also talk about how he got into software and iOS app development. Shaun took the React route. Start with web development, get started with React, progress into React native and then making the leap into native app development.

Ray Wenderlich, now called Kodeco was instrumental in learning about iOS app development.

You can get in touch with Shaun through Mastodon or his website.

• https://mstdn.social/@shaundon
• Nice UX Design Newsletter
• https://codakuma.com/
  • Links to his apps are on his website too.

Some of the podcasts we mentioned in the episode:

• Under the Radar Podcast
• It's Always Sunny in Philadelphia Podcast Episodes – The Always Sunny Podcast
• 99% Invisible
• Everything Everywhere Daily Podcast
• Accidental Tech Podcast
• Swift by Sundell

Adam's conference https://swiftleeds.co.uk/

Big shoutout to Dave Verwer and the Curated platform.

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
Learn best practices for being a great lead software developer.

Support the show

Do iOS: https://do-ios.com

Rate me on Apple Podcasts.

Send feedback on SpeakPipe
Or contact me:

• Mastodon: https://hachyderm.io/@appforce1
• X: https://x.com/appforce1
• BlueSky: https://bsky.app/profile/appforce1.net
• LinkedIN: https://www.linkedin.com/in/leenarts/

Support my podcast with a monthly subscription, it really helps.

My book: Being a Lead Software Developer

I've been scheduling a few interviews again. It's interesting to see that people are often quite self-deprecating about being a good candidate to be interviewed on my podcast. People can always indicate why they are not exciting guests, but let's start at the opposite end. Think about why you would be a good guest for my podcast. And I notice that a lot. People often start with the negative. Why not start with the positive, I wonder?

In this episode I am going to talk about many things:

• The new book published by Peter Friese
• Minimal Node Integration to Get You Started with Stream
• Merge Sort In Swiftif let shorthand syntax in Swift
• Implementing “double tap tab bar to scroll to top”
• Variadic Views
• SwiftUI Views are Lists
• How to use async/await with completion handlers
• Ambiguous Decoding
• Modern SwiftUI: Identified arrays
• Search | kean.blogDeveloper guide on keychain for iOS
• Iterating over web socket messages with async / await in Swift
• NSURLSession connection leak
• Gaining access to Command-line from XCTest

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
Learn best practices for being a great lead software developer.

Support the show

Do iOS: https://do-ios.com

Rate me on Apple Podcasts.

Send feedback on SpeakPipe
Or contact me:

• Mastodon: https://hachyderm.io/@appforce1
• X: https://x.com/appforce1
• BlueSky: https://bsky.app/profile/appforce1.net
• LinkedIN: https://www.linkedin.com/in/leenarts/

Support my podcast with a monthly subscription, it really helps.

My book: Being a Lead Software Developer

Natalia worked in companies in Europe and in New Zealand building web and mobile applications. Before joining Nil Coalescing she was designing and building SwiftUI APIs as a member of the core SwiftUI team at Apple. She enjoys working with Swift and sharing her iOS development knowledge with the community. She recently wrote a book Integrating SwiftUI into UIKit Apps that covers a variety of ways to add SwiftUI to an existing UIKit project and offers many tips to avoid common issues and mistakes when working with both frameworks at the same time.

Check Natalia's book and consider getting your copy:

• https://books.nilcoalescing.com/integrating-swiftui

You can find Natalia online on:

• Mastodon: https://mastodon.cloud/@natpanferova
• Twitter: https://twitter.com/natpanferova

The business she runs with her husband is called Nil Coalescing.

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
Learn best practices for being a great lead software developer.

Support the show

Do iOS: https://do-ios.com

Rate me on Apple Podcasts.

Send feedback on SpeakPipe
Or contact me:

• Mastodon: https://hachyderm.io/@appforce1
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• BlueSky: https://bsky.app/profile/appforce1.net
• LinkedIN: https://www.linkedin.com/in/leenarts/

Support my podcast with a monthly subscription, it really helps.

My book: Being a Lead Software Developer

Meet my friend. ChatGPT. I interviewed him. It's an idea I got from another podcast. Enjoy. :)

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
Learn best practices for being a great lead software developer.

Support the show

Do iOS: https://do-ios.com

Rate me on Apple Podcasts.

Send feedback on SpeakPipe
Or contact me:

• Mastodon: https://hachyderm.io/@appforce1
• X: https://x.com/appforce1
• BlueSky: https://bsky.app/profile/appforce1.net
• LinkedIN: https://www.linkedin.com/in/leenarts/

Support my podcast with a monthly subscription, it really helps.

My book: Being a Lead Software Developer

It has been a while since my last episode. But no worries, I am not gone. January has been a super busy month and I have been working on some exciting things this month. Hopefully I can share a bit more on that soon. It involves setting up a new project using a micro framework architecture using Tuist.io. If you never checked out that too, make sure you do.

Also, you can now support my podcast with a subscription directly through my podcast hosting provider. I love Buzzsprout for the way they keep raising the bar as a podcast hosting provider.

I did part of the recording and editing after the surprise wedding of my nephew. The surprise was on us, the guests, do if I missed something in editing, now you know why.

In this episode I am going to talk about many things:

• Fake hardware and my my quest for a new microphone
• Reading hardware
• Utilizing Makefiles for Swift projects
• Shift in the protocol paradigm
• Debouncing with Swift concurrency
• 5 Techniques to Effortlessly Send Data from UIKit to SwiftUI
• Using JavaScript in a Swift app
• Creating App Prototypes from Low to High-Fidelity
• The Tyranny of the Churn Equation
• Text modifiers in SwiftUI
• Applying Built-In Image Filters In Swift
• Making a serverless Swift function with Fastly and Upstash

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
Learn best practices for being a great lead software developer.

Support the show

Do iOS: https://do-ios.com

Rate me on Apple Podcasts.

Send feedback on SpeakPipe
Or contact me:

• Mastodon: https://hachyderm.io/@appforce1
• X: https://x.com/appforce1
• BlueSky: https://bsky.app/profile/appforce1.net
• LinkedIN: https://www.linkedin.com/in/leenarts/

Support my podcast with a monthly subscription, it really helps.

My book: Being a Lead Software Developer

In this episode, I’m going to talk about:

• A new microphone for podcasting, the Shure 87A
• 2022 in review
• How to Run Stream’s Docs on a Multipass VM
• Xcode Cloud scripts: Fastlane and Cocoapods
• Swift async/await in AWS lambdas
• Looking back at my 2022
• Using CallKit - How to Integrate Voice and Video Calling Into iOS Apps
• HTTP/3 support for URLSessionTesting Apps with an iPhone and the CarPlay Simulator
• Trap exit code (SIGINT, SIGTERM etc) in a Swift Package Executable CLI
• The day my app got thousands of downloads and in-app unlocks

It has been a while since my previous episode. Recovering from Do iOS and then December happened. Holidays, some family illness. But I kept going in some capacity. Getting a new microphone is a big incentive to get going again.

But I need your thoughts and input.

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
Learn best practices for being a great lead software developer.

Support the show

Do iOS: https://do-ios.com

Rate me on Apple Podcasts.

Send feedback on SpeakPipe
Or contact me:

• Mastodon: https://hachyderm.io/@appforce1
• X: https://x.com/appforce1
• BlueSky: https://bsky.app/profile/appforce1.net
• LinkedIN: https://www.linkedin.com/in/leenarts/

Support my podcast with a monthly subscription, it really helps.

My book: Being a Lead Software Developer

Azam and I discus some architectural ideas Azam has developed over the course of over a hundred sample codebases.

• Azam's blog
• Azam's article mentioned in the episode: Practical Mv Pattern Crud
• Azam's Udemy course: MV Design Pattern in iOS - Build SwiftUI Apps Apple's Way
• Azam on Twitter

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
Learn best practices for being a great lead software developer.

Support the show

Do iOS: https://do-ios.com

Rate me on Apple Podcasts.

Send feedback on SpeakPipe
Or contact me:

• Mastodon: https://hachyderm.io/@appforce1
• X: https://x.com/appforce1
• BlueSky: https://bsky.app/profile/appforce1.net
• LinkedIN: https://www.linkedin.com/in/leenarts/

Support my podcast with a monthly subscription, it really helps.

My book: Being a Lead Software Developer

Marin and I discus how 2022 went for him and what his plans are for early 2023.(It is dataTile, a smart developer tool that reads your app's logs from the Xcode Simulator in real time and displays your debug data in a beautiful, bold UI.

You can find Marin online at:

• https://underplot.com/
• On Mastodon: https://mastodon.social/@icanzilb
• Learn more about dataTile https://underplot.com/dataTile/

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
Learn best practices for being a great lead software developer.

Support the show

Do iOS: https://do-ios.com

Rate me on Apple Podcasts.

Send feedback on SpeakPipe
Or contact me:

• Mastodon: https://hachyderm.io/@appforce1
• X: https://x.com/appforce1
• BlueSky: https://bsky.app/profile/appforce1.net
• LinkedIN: https://www.linkedin.com/in/leenarts/

Support my podcast with a monthly subscription, it really helps.

My book: Being a Lead Software Developer

Pol, a senior iOS developer working on the iPlayer app by the BBC. He loves sharing content and writing about all things mobile development and Swift.

He also writes on his blog. https://www.polpiella.dev/
Follow him on Mastodon. Or Twitter.

He did his first conference talk at Do iOS in 2022. I'm sure Pol will share that link once it becomes available. He did an amazing talk titled "Fantastic Swift Tools and where to find them".

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
Learn best practices for being a great lead software developer.

Support the show

Do iOS: https://do-ios.com

Rate me on Apple Podcasts.

Send feedback on SpeakPipe
Or contact me:

• Mastodon: https://hachyderm.io/@appforce1
• X: https://x.com/appforce1
• BlueSky: https://bsky.app/profile/appforce1.net
• LinkedIN: https://www.linkedin.com/in/leenarts/

Support my podcast with a monthly subscription, it really helps.

My book: Being a Lead Software Developer

This is Alexander, he and Drew created the note taking app Agenda. A Mac and iOS focussed App.Learn more about Alexander, how he got to creating Agenda and what motivates him day to day.

To learn more about Alexander and his product:

• Visit Agenda.com (referral link, it extends my Agenda update window)
• Learn more about Papers
• On Twitter

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
Learn best practices for being a great lead software developer.

Support the show

Do iOS: https://do-ios.com

Rate me on Apple Podcasts.

Send feedback on SpeakPipe
Or contact me:

• Mastodon: https://hachyderm.io/@appforce1
• X: https://x.com/appforce1
• BlueSky: https://bsky.app/profile/appforce1.net
• LinkedIN: https://www.linkedin.com/in/leenarts/

Support my podcast with a monthly subscription, it really helps.

My book: Being a Lead Software Developer

In this episode, I’m going to talk about:

• When does a SwiftUI Environment get retained?
• Animated Launch Screen in SwiftUI
• A Guided Tour for SwiftUI ForEach Structure
• What is the difference between List and ForEach in SwiftUI
• How Does Swift Concurrency Prevents Thread Explosions?
• Building custom layout in SwiftUI. Basics
• Using SwiftUI Effects Library: How to Add Particle Effects to iOS
•  AppsIntroducing - Swift cheatsheet - The.Swift.Dev.

This episode is something special. According to the stats of my podcast hosting provider, this is my 200th episode. And what a ride I had between this episode and my previous one. My last episode was published two and a half weeks ago. And a lot of things happened since then.

• I was still preparing for Do iOS on November 3 and 4.
• Had a weekend I kept going over my notes for Do iOS.
• Then the Do iOS workshop started with Daniel Steinberg and I was collecting and bringing some of the material we needed for Do iOS to Amsterdam. For lunch, I stopped at the workshop to check in on things and talk to a few people to get the vibe of the crowd at the workshop. It was pretty good.
• Then it was November 8. Do iOS day. I was the stage host the entire day, but we started with onboarding everyone at the door. I spoke a few words with all attendees at registration. Then an entire day of talks, making sure catering was taken care of, taking care of little issues. And making sure we kept a good pace. At the end we had a nice social drink with all attendees and a typical small Dutch snack.
• Evening of the first conf day, we had a sort of casual diner, and it got a bit out of hand. We raided a restaurant and stressed out kitchen staff with such a big unannounced group. We smoothed

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
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In this episode, I’m going to talk about:

• Introducing Rollouts by Runway
• A menu bar only macOS app using AppKit
• How to check for network connection and present an alert in SwiftUI
• Understanding different cache policies when working with URLRequest in Swift
• Handling never finishing async functions in Swift package tests
• How to Get Push Notification while iOS App is in Foreground

Don’t forget, you can buy me a coffee. Marco Eidinger did just that, buy me a coffee. Thanks a lot Marco.

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Counting down to Do iOS. At the time of this recording, I have almost two weeks to go, but it sure feels like it is happening tomorrow. Sending out messages to all attendees and speakers, making sure roll-up banners are ordered, putting together staff briefings for the Do iOS team and for the catering team, and preparing "filler" slides for when speakers are switching. Hotel bookings for team members. It is just a lot of small bits that all need to happen. I must say I feel very well organized and prepared. I think in large part that's due to my note-taking in Obsidian. Recently I showed what I have for notes to a colleague of mine and he was quite taken aback by the amount of stuff I write down. And I feel like I only capture half of all I want to capture.

In this episode, I’m going to talk about:

• Thoughts on SwiftUI vs UIKit
• Three Ways to Refactor Massive SwiftUI Views
• Mastering NavigationSplitView in SwiftUI
• How to create NSManagedObject subsclasses for Core Data entities in Xcode
• Refactoring Swift: Best Practices to succeed

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...here  I come. KLM permitting.

Getting ready to go to Swift Leeds.

Finally received that Model-100 keyboard I kept on talking about. This thing is just amazing. More on that when I have used the device a bit more.

Also, the video of my talk at 360iDev is now available too. And if you are still looking for training on aSync/Await, Daniel Steinberg will be in Amsterdam on November 7th.

Now I am off to SwiftLeeds, if you are there too, come say hi, I'll most likely be near the Stream table.

In this episode, I’m going to talk about:

• How to add Keyboard Shortcuts in SwiftUI
• Mastering NavigationStack in SwiftUI. NavigationPath
• Using the dismiss action from the SwiftUI environment
• SwiftUI View That Fits
• Accordion in SwiftUI - DisclosureGroup Explorations
• Apple’s use of Swift and SwiftUI in iOS 16
• System Programming Interfaces (SPI) in Swift Explained
• Memory management for async/await and tasks in Swift
• Developer guide on the iOS file system
• Alternate App Icon Configuration in Xcode
• Where View.task gets its main-actor isolation from

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

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Full on prep mode for Do iOS by now. What is it. Just 5 or 6 weeks remaining. When I am preparing this episode, there were just 2 tickets remaining. So we will have a full house. I was also looking into putting together a workshop the day before the conference and that has now been put together thanks to the gracious support of Jeremy Barger. You might know him as TheSwiftNomad on Twitter. He is looking for people to take a look at his Swift Developer Academy. So take a look.

Articles in this episode:

• Swift’s print(), debugPrint(), String(reflecting:), Mirror(reflecting:) and dump()
• Side Projects: 10 Tips for being successful
• Deadlocks in Swift explained: detecting and solving
• How to manage lifecycle events in SwiftUI iOS applications
• viewDidLoad() in SwiftUI
• Why your Xcode version still matters with Module Stability
• Displaying live activities in iOS 16

Oh and I am still waiting on that keyboard…

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I share my thoughts about a piece of hardware. Progress on the Do iOS conference and my anxiety about a delivery.

In this episode I’m going to talk about:

• Editable navigation titles in SwiftUI on iOS 16
• Dynamic Island (and Live Activities): Quick start tutorial
• Enabling Concurrency warnings in Xcode 14
• SwiftUI zIndex: Everything you need to know
• Accessing UIHostingController from a SwiftUI view
• New BackgroundTask in SwiftUI and How to Test It
• iOS developer guide on the main aspects of Core Data

I also mention:

• Do iOS
• A BenQ Screenbar
• And the Model-100

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It is already two weeks since my previous episode. The one I did in the hotel room in Denver. It really feels like a distant memory already. So much stuff happened again in two weeks. My son's bedroom furniture got delivered. He now has a pirate themed bedroom, inclusing a shark desk, ship-bed / bed-ship and a treasure chest. I am not jealous at his room. Nope not at all. You can imagine we are now in a talk-like-a-pirate day streak here at home.

Last week my voice was quite bad, I had a weird cold that was not causing too much discomfort. Except for my voice. It was raspy and if I talked too much I was coughing a lot. Not ideal for a podcast recording. So I decided to skip. I had plenty of other things to do anyway. Like a conference…

I am super excited to announce that for Do iOS on November 8 and 9, tickets are available, we have the first 6 speakers announced.

This week’s articles.

• Generate a man page for a Swift command-line tool
• Introducing MarkCodable
• Exploring SwiftUI Redraw Behavior with Instruments - Holy Swift
• Accessibility in SwiftUI explained for UIKit developers - SwiftLee
• VoiceOver navigation improvement tips for SwiftUI apps - SwiftLee
• The SwiftUI render loop
• How to build a configurable widget with WidgetKit and SwiftUI

Most important is to go to do-ios.com for all information related to Do iOS. You can also follow the conference on Twitter, it has a very easy twitter handle: iOSConf

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

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360iDev has been an enjoyable experience thus far. I still have the final day of the conference ahead of me when I record this. But I must say, it is awesome seeing so many familiar faces. The weird thing is, I'm seeing most of them for the very first time in real life. Special shoutout to Josh, Azam, Mikaela and Leo. It is great to be able to meet you, for real finally. What I also noticed is how different the conferences are. I've been to AppDevCon, SwiftHeroes, Techorama.be and 360iDev this year and each had a totally different vibe. And each had its own strengths. Experiencing these conferences reaffirmed my resolve to push for another edition of the Do iOS conference in November. I got the first offer letter from a venue and am awaiting a second to ensure I get a good deal on the whole thing. A fun thing to know about organizing an event, the room is a small line item compared to the catering. Once I have the venue booked it is time to do some final number crunching and decide on a ticket price. It will probably be a lot lower than you might expect, which makes me super happy.

This week’s articles.

• PSA: iOS 16 is a huge opportunity to promote your app
• Lock screen widgets in SwiftUI
• Building widgets for iOS applications with WidgetKit and SwiftUI
• A Beginner's Guide to NavigationSplitView in SwiftUI for iOS 16
• Custom Metrics with MetricKit
• How to capitalize the first letter in Swift
• ExtensionKit and XPC
• Sharing cross-platform code in SwiftUI apps

Material for 360iDev.

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
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This episode I am talking to David Barnhard from the SubClub podcast.

Interviewing a fellow podcaster is always a blast. Not much audio cleanup todo once done.

David runs the SubClub podcast for RevenueCat. I reached out to David months ago and only just now did we get to a recording session. So this was set in motion long before the sponsorship a few weeks ago became a thing.

Make sure to check David's app business called Contrast as well.

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Two weeks since my previous episode. I had my reasons. My family and I went on a trip visiting family in Luxemburg. We slept over monday till friday and I was just not able to record an episode.

Of those two weeks the first one was quite warm in the Netherlands. We actually had the first heatwave in the Netherlands this year. year. Nothing too terrible temperature wise, but the related drought is no fun. Again not as bad as other parts of the world, but it is noticable everywhere you go. Also, upstairs, where I record my podcast episodes is not a fun place to be with these temperatures.

As mentioned, the second week was family time, which was a really fun time. I got to spend the entire week with my family with dedicated attention without having work in he back of my mind too much.

Not thinking about work is hard right now. Only a few days from now I am travelling to Denver to visit 360iDev. I still want to do a lot of checks on my slides and presentation. I am going to be representing Stream there, so… No pressure, right?

Considering my travel plans for the next week, I am unsure how/when I will be able to do episode 89. I actually might do something with my DJI Mic while I am in the US. It sounds like a great opportunity to do some fun recordings that are immediatly usable for my podcast. Who knows. Keep an eye on my feed and you will not miss a thing.

This week’s articles.

• Implementing a main thread watchdog on iOS · Jesse Squires
• Lenses and prisms in Swift - The.Swift.Dev.
• The easiest way to manage multiple Xcodes - Testable 🍏
• Shared with You implementation and testing explained - SwiftLee
• Mastering grid layout in SwiftUI | Swift with Majid
• Cheat sheet on VoiceOver gestures for iOS
• Implementing Password AutoFill for an iOS application
• Swift.org - Server Guides Now on Swift.org
• Faster Sto

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I have a talk with Josh Holtz about his work at RevenueCat and what RevenueCat can do for you as an iOS app developer.

In-App Subscriptions Made Easy

The world's best subscription apps use RevenueCat to power in-app purchases, manage customers, and grow revenue on iOS, Android, and the web.

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
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Right after my vacation it was heads down mode again. At my work, we had a sort of restructuring of the group I am a part of. And this meant a lot of things have changed in how my day to day looks. I now lead developer experience at Stream within Developer Relations. This involved setting up a lot of project related things. From Developer Experience we work very closely with developer advocacy and because of this we chose to set up a shared task board. This way we can easily hand over work or share the workload for specific tasks.

I already had a lot of podcast work I needed to do last week, so I couldn’t fit a recording session for my regular episode. But, I do have a really cool special episode I did with Josh Holtz from RevenueCat. Keep an eye out for that one later this week. If all goes well, it should be done soon. For reasons I am not sharing yet, I put in some extra effort to the RevenueCat episode. I hope it will be an inspiring episode.

Let’s dive into this week’s articles.

• Using Measurements from Foundation for values in Swift Charts
• Eager Grids with SwiftUI
• Flow Navigation With SwiftUI 4. Implementing the new NavigationStack…
• Localising a modularised application
• Using Xcode- Creating Reusable and Shareable Color Palettes
• Experimenting with Live Activities
• Supporting universal links in a SwiftUI application
• Common Swift Task Continuation Problem

CocoaHeadsNL Meetups

Coding is like riding a bike

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Obsidian note taking

Articles of this week:

• Slicing Environment Object
• Global Routing Using Navigation Stack
• Asset Catalog and Dark Mode
• Delay an async Task in Swift using the new clock APIs
• Background tasks in SwiftUI
• The Trade-offs of Using Mirror API to do Code Reflection in Swift
• How to create a list with Compositional Layout
• Code generation using Swift Package Plugins
• First Experience With Transferable Implementing Drag And Drop In SwiftUI

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

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Learn about why Gabriel and his co-founders got started with Runway. He started out as an iOS developer, but things quickly progressed from there.

Gabriel on Twitter: https://twitter.com/GabrielSavit

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Shoutout to Jason Zurita for his article https://jasonzurita.com/the-hidden-cost-of-dependencies/

1. What are third party dependencies? 
   1. Explain the distinction between: 
      1. 1st party, for iOS devs, anything in the iOS SDK.
      2. 2nd party dependencies, stuff integration from service provider you rely on. (You could call this a subset of 3rd party dependencies you really can not do without.)
      3. 3rd party, stuff you integrate because it saves your time or it is convenient
2. Risks with 3rd party code 
3. How to find third party dependencies 
4. Licensing an the app store 
   1. GPL is “difficult”
   2. An Apache or MIT type license is reasonable 
      1. If you are unsure, read up a bit on licenses. https://opensource.org/licenses
5. How to choose to adopt a dependency 
   1. Just link it won’t do
   2. Review the dependency and project health on Github. 
      1. What quality checks does the project have in place?
      2. How does the support by the dev(s) look to you?
      3. Would you pay for this feature set if it wasn’t available for free? 
         1. If yes, WHY ARE YOU NOT SPONSORING THIS PROJECT?
6. How to deal with dependencies in the long run? 

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

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Wait, what is going on here? Kim Arnett as a host? Interviewing Jeroen? What is going on here? Listen to Kim interview me. Enjoy!

Have a look at Kim's Twitter @kaydacode and her online shop with many cool stickers and other items!

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
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Welcome to my podcast. Different one again. Today I'll tell you what I use for podcasting and why I use these.

Hindenburg Journalist Pro

• Pixelmator Pro
• Audient Evo 4
• Samson Q7
• Audio Technica ATH-M50x
• MacBook M1
• Expert Mouse Trackball
• IQunix L80 with Cherry MX Brown switches <-  I use an Atreus by KeyboardIO now
• OWC Thunderbolt Dock
• LG 27UL850-W, 27 inch 4K UHD IPS LED Monitor
• Buzzsprout Podcast hosting (Affiliated link)
• Riverside.fm (Affliated link)
• Agenda - Date-focused note taking (Affiliated link)
• Some cables and stands

If you have any question on the above, please let me know. I love talking about gadgets. But that is not what my podcast normally is about.

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Shane owns and runs ClearSummit an agency with a clear focus on React and ReactNative development.He started in aviation and got into iOS on his own time. Learn how teaching himself iOS development ended him up owning a business.

• More info on ClearSummit, the company by Shane
• They also have job openings
• Book: The Hard Thing About Hard Things
• Book: Good Strategy/Bad Strategy

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Something a bit different this week.

A big shout out to Benoit for his article.

Articles of this week:

• What Are Vanity Metrics? - And How to Identify Them
• Being more efficient as a mobile engineer
• My Template to Research, Design and Ship iOS Apps
• How to use inner shadows to simulate depth with SwiftUI and Core Motion
• Mastering NavigationStack in SwiftUI. Deep Linking
• Align y-axis to leading edge in Swift Charts
• Plotting data distributions with Swift Charts
• Comparing build speeds of Xcode 13 and Xcode 14b2
• SF Symbol Changes in iOS 16.0. Introduction

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

Lead Software Developer 
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With over a week to inspect and reflect @amos_gyamfi, @stefanjblos and me look back and share what we think thusfar.

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Honestly, exciting week for me. A presentation at AppDevCon this week. I also put together a BuymeaCoffee page. And on top of that there is some really good content coming out in the last week. Not as much as right after WWDC. But still... great stuff.

• The App Icon Book by Michael Flarup, previous guest on my podcast discussing his book and other activities.
• Slides CocoaHeadsNL talk: WebAuthN and PassKeys
• Swift Package Index DocC

This week's articles:

• SwiftUI '22 in Numbers (and a few Charts)
• Capturing Text within Image Using Live Text API and SwiftUI
• Using the SwiftUI 4 ImageRenderer
• From Strings to Data using ParsableFormatStyle
• The Best Change to Come From W.W.D.C. 2022
• Removing Dependencies: One Weird Trick for Increasing Happiness

Join me in Amsterdam for Do iOS 2025, tickets and details available now.

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Swift and SwiftUI received big updates last week. Yes, only available on beta releases. But give it a few months and we are living and breathing these changes.

I also liked a CarPlay article I stumbled upon. It is a really nice change of pace integrating something on CarPlay. A bit like venturing into AppleWatch or macOS for the first time.

I tried to order them in a logical way. Obviously there is a ton more news from Apple. But this is what I could fit in an podcast episode within reason.

During my intro I also mentioned the Swift Package Index. Check it out, I really love their recently added support for DocC generation and hosting.

Here are the links of this week.

• All new frameworks presented at WWDC22
• What’s new in Swift 5.7
• Swift 5.7’s new optional unwrapping syntax
• What’s the difference between any and some in Swift 5.7?
• Using the ‘some’ and ‘any’ keywords to reference generic protocols in Swift 5.7
• Trying new Swift features on Linux via VS Code dev containers
• What’s new in SwiftUI for iOS 16
• Overview of the new SwiftUI navigation APIs
• iOS 16: Notable UIKit Additions
• Create a Detent with a Custom Height in iOS 16
• What’s new in Xcode 14
• Xcode integration of Swift Package Plugins in Xcode 14

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Amos travelled to Cupertino for WWDC, and all three of use really enjoyed WWDC. So enough to look back on.

With @amos_gyamfi, @stefanjblos and me. 

We each have our own experience of WWDC and each of us has a preference for what we liked most. We share our thoughts and discus what we think about the latest announcements by Apple.

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Stefan and I reflect a bit on the past 24 hours. We've been frantically working on our keynote and state of the union articles. Good stuff to work on.

Stefan and me writing about:

• The WWDC 2022 Keynote
• The Platform State of the Union

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This is a quick edit of the proceedings. There can very well be audio mishaps in this.
We had a MEGA-PRE-WWDC Twitter space on June 1 talking expectations/predictions!

These were the hosts: @mikaela__caron, @dvrzan, @joshdholtz, @jordibruin, @rudrankriyam, @amos_gyamfi, @stefanjblos and me. 

We had tons of fun though.

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Marina is a software developer and engineering leader focusing on development for Apple platforms. She's been working in tech since 2008, building tools, products and leading teams.She runs the iOS Code Review Newsletter, and is building the Away App.

• https://hybridcattt.com/
• Marina on Twitter
• Away App
• Sign up to Marina's newsletter iOS Code Review Newsletter

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Newsletter, sign up!

My book: Being a Lead Software Developer

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This week I decided to do things different a little bit. I have no clue how exactly next week will look. I know it will be busy, I know it will be awesome. My team and I at Stream are putting together all kinds of ideas for the iOS community.

News articles of this week:

• Server-Side Vapor Swift Implementation With Google, Apple, and Github Authentication
• What’s A Best-in-Class macOS App Look Like?
• Cross-Platform Mobile Frameworks — An iOS Engineer's Perspective
• Understanding Certificates and iOS Provisioning Profiles
• Introduction to SPM artifact bundles
• Using OAuth Tokens to Make REST API Calls
• Does SwiftUI View Not Compile? Time To Start Making It Lighter
• CollectionOfOne in Swift
• Coordinator pattern with UITabBarController
• Interface Builder: Guides | Xcode Tips

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Seems I made a muting mistake on my part of my episode with Lea. Please re download the episode if you have issues. It should be fixed now.

Meet Lea, you might have seen her online before. If she's doing a talk at a conference near you. JOIN THAT SESSION You will not regret it.Lea is working on Jrny an app based coaching system. Lea bootstrapped it with shoestring and not much more, a fun insight in how an idea can be validated. Just by doing the work.

Register with JRNY to see if JRNY is a fit for you. (Highly recommended. 👍)

• JRNY - career coaching for everyone, powered by AI
• Lea at RayWenderlich
• Lea on Twitter

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Let's get ready for some conferences. Techorama, AppDevCon and 360iDev. Ready or not…

Articles of this week:

• Fold/Unfold | Xcode Tips
• How to use a different Swift toolchain in Xcode
• Using the isEnabled environment value in iOS 14
• Mastering TimelineView in SwiftUI
• Use textCase() to make Text uppercase or lowercase
• How to Start iOS Development Career Part 2 - Learning Swift Language
• CLIs are products too
• Unlisted App Distribution on the App Store

CocoaHeadsNL events:

• June @ Stream, Wed, Jun 15, 2022 Meetup
• WWDC @ Q42, Mon, Jun 6, 2022  Meetup

Monday tweet Donn Wals

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In a recent Twitter Space, Stefan and I decided to dig into a log of things that interest us beyond just iOS development.

Some links:

• Audio / podcasting 
  • DJI Mic
  • Shure Beta 87a
• Trackballs 
  • Kensington Expert Wireless, but want to get my hands on a Profit Ergo
• Keyboards 
  • KeyboardIO Atreus
  • Homebuild Lily58
  • KeyboardIO Model-100

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Lost my voice there for a bit. It wasn't that i was unable to speak, but I was sounding so raspy and just horrible. I couldn't make myself inflict that upon you, my listeners.Lots of catching up to do, so I have a whole bunch of articles for you this time. Enjoy!

DJI Mic

The SwiftUI Series by Jordi Bruin

CocoaHeadsNL meetups

Articles of this week

• Measuring app performance in Swift
• How to change SwiftUI font size
• How to style SwiftUI text Font
• Divider in SwiftUI - Everything you need to know
• On iOS applications architecture. A short opinion piece
• Quick guide on toolbars in SwiftUI
• Binary targets in modern Swift packages
• How to let user select file from Files
• Make Swift Playgrounds 4 Apps: First Steps
• A flexible way to handle and alert errors in SwiftUI
• Playing With SwiftUI - Implementing A Customizable And Animatable Circled Checkmark View – SerialCoder.dev
• How to Start iOS Development Career - The 5 Steps Plan
• Modeling errors in Swift
• Log in to Websites with ASWebAuthenticationSession
• LibraryConten

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Hear my totally business voice. Alexei and me representing the Stream team. I really liked how it turned out. It is a bit of an oddball episode compared to my regular ones. But I think a lot of fun nonetheless.

https://enginears.io/podcast/

Stream are the #1 chat API for custom messaging apps and started off building activity feeds and slowly started introducing chat messaging API’s which feeds large-volumes of their traffic. Jeroen and Alexei took us on a journey to understand some of the challenges around latency, scalability and mobile performance.

A great discussion which feeds into end-to-end challenges of the platform and why they are critical to one another, especially in an API first product.

• We discuss vertical v horizontal scaling through different API/chat activities.
• Building 3 SDK’s for mobile and importance of CX.

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Shoutout to Jason Zurita for his article https://jasonzurita.com/the-hidden-cost-of-dependencies/

1. What are third party dependencies? 
   1. Explain the distinction between: 
      1. 1st party, for iOS devs, anything in the iOS SDK.
      2. 2nd party dependencies, stuff integration from service provider you rely on. (You could call this a subset of 3rd party dependencies you really can not do without.)
      3. 3rd party, stuff you integrate because it saves your time or it is convenient
2. Risks with 3rd party code 
   1. Complexity (thank you Jason) 
      1. Managing versions
      2. Try updating a dependency in a Node’js codebase.
      3. Build times, more code == more waiting
      4. 3rd party code problems are often now your problems 
         1. OSS frameworks only have a guarantee until the door
      5. 3rd party code often intertwines deeply with your implementation if you are not very careful 
         1. REALM or other data serialization libs are a great example
   2. Security 
      1. You choose to adopt all this third party code including all its warts, problems, issues and hidden problems. 
         1. Enterprises often require a 100 percent review of any third party code. There is a reason big corps at some point try and loose as many dependencies.
   3. Third party dependant developer syndrome (this is a fun one) 
      1. Not invented here syndrome should also be avoided though
3. How to find third party dependencies 
   1. CocoaPods index.
   2. Swift Package Index, mention we sponsor them. Only mention this once briefly 
      1. We also sponsor Tuist
   3. Github and Google search
4. Licensing an the app store 
   1. GPL is “difficult”
   2. An Apache or MIT type license is reasonable 
      1. If you are unsure, read up a bit on licenses. https://opensource.org/licenses
5. How to choose to adopt a dependency 
   1. Just link it won’t do
   2. Review the dependency and project health on Github. 
      1. What quality checks does the project have in place?
      2. How does the support by the dev(s) look to you?
      3. Would you pay for this feature set if it wasn’t available for free? 
         1. If yes, WHY ARE YOU NOT SPONSORING THIS PROJECT?
6. How to deal with dependencies in the long run? 
   1. Often you have to adopt the whole dependency as a whole at some point. 

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Mark created Big Mountain Studios with a reason. A lifestyle business. At some point he discovered his lifestyle and his business didn't match anymore. So he decided to change up a few things in his business. You will also learn a lot about what motivates Mark and how/why he started Big Mountain Studios.

You can find Mark online on:

• Twitter
• https://www.bigmountainstudio.com/

As discussed in the episode, this year Mark moved all his paying subscribers over to the service of Coding with Chris.

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It is amazing to get back to in person events again. Totally worth all the hassle of arranging hotels, travel and family life at home. Also a big shout out to Mikaela Caron and her YouTube channel.

News / Events

• Two Ways to Unit Test Notification Center in Swift
• How to code sign on CI along with Xcode auto sign
• Quick guide on local notifications for iOS
• SwiftUI Supporting External Screens
• Exploring data with Swift TabularData and DataFrame

CocoaHeadsNL Nieuws

• May @ Maxdoro, Wed, May 18, 2022, 6:00 PM
• WWDC @ Q42, Mon, Jun 6, 2022, 7:00 PM
• June @ Stream, Wed, Jun 15, 2022, 6:00 PM

Community activities

• AppDevCon
• Mikaela Caron
• iOSDevUK
• App Builders 2022 - Labs Edition
• Appdevcon is a conference by app developers, for app developers.
• SwiftConf - International Swift and iOS Conference
• Swift Community Awards – Hacking with Swift

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Notes based on Stefan's companion blog post

Kindly share and like this to support us and the project:

• Release tweet
• Github repository
  • Star the repo, it allows us to work on it
• LinkedIn post about release
• Mac App Store Link

The starting point?

1. Amos created tutorials around animations
   • Spring animation tutorial
   • Problem: How to test animation easing before using them in SwiftUI
   • Solutions for web:
     • https://easings.net/
     • https://cubic-bezier.com/
2. Stefan created a little example with some controls that set parameters

How did we approach it?

1. Open-source
2. Start with the bare minimum
3. Include a few examples, add parameters to play around within a very simple UI
4. Amos created most of the animations
5. Stefan created the skeleton of the Mac app
6. Tested by people from our team (via TestFlight)
7. Similar app got released: Couverture

Future plans?

1. Move process to Github
2. See what people would like/contribute
3. More animation examples
4. Improve UX (Example: Timing curves - the ability to adjust control points with the control handles of the graph)

Listener Requested Links

• SwiftUI Animation Links
  • SwiftUI Animation on Udemy
  • Book (old buy mighty)
  • Mark’s SwiftUI animations book
  • Learn Core Animation with Kite
  • 100 Days of SwiftUI (Day 32 - 34)
  • SwiftUILab
• SwiftUI Animation Inspiration

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It is the day before King's day. So party time in the Netherlands.

• The difference between checked and unsafe continuations in Swift
• Correctly playing audio in iOS applications
• Using DocC on GitHub Pages
• AsyncThrowingStream and AsyncStream explained with code examples
• iOS Scene Delegates and External Screens

CocoaHeadsNL June 15 @ Stream

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Hidde started out as a designer, but realized he wanted to build what he was designing too.  His sense of design stuck with him while learning how to make apps for the iPhone and Apple Watch. His latest creation is a niche Watch app for kite surfers called Volo.

More info on the apps Hidde creates: https://modumhq.com/

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Easter weekend, so I was offline a lot the last four days. Including my regular recording evening. Sometimes personal life takes priority. But just a day later we should be good with a quick recording. Six articles this week which I think you should read.

• Exporting data from Unified Logging System in Swift
• Transitions in SwiftUI
• Unit Testing and UI Testing in Swift
• The Hidden Costs of Your Dependencies
• How to create a GitHub Action to upload dsyms
• SwiftUI performance tips

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Awesome space on Swift Heroes with Adam, Amos, Martin, Stefan and me. I am still figuring out who the other speakers during the space were, I will update these note.

Some of the conferences we mentioned:

• Swift Heroes
• iOSDevUK
• App Builders
• Appdevcon
• SwiftConf
• Swift Leeds

Check all of these. It is great to meet again in person.

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