John Sundell

@johnsundell

Creator of , co-host of , Swift developer, avid prototyper and amateur chef 👨‍💻👨‍🔬👨‍🍳

Gdańsk, Poland
swiftbysundell.com
Joined February 2011
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  1. 22 hours ago

    Update: The GM seed of Xcode 12 is now available:

    5 replies 7 retweets 62 likes
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  2. 22 hours ago

    The reason why Apple is surprise-releasing iOS 14 tomorrow might be because nothing else shown in the keynote is shipping immediately, and they wanted something that people can get their hands on now. But not giving developers a heads-up (or even a GM) is still a terrible move 🙁

    28 replies 81 retweets 474 likes
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  3. Sep 15

    Sundell HQ is ready for today's ! 👍 Less than an hour to go - who's excited? 😀

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    10 replies 7 retweets 241 likes
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  4. Sep 15

    Continuing to explore what's new in UIKit in iOS 14 by taking a look at the new UIAction-based APIs for handling UIControl events — finally, a built-in way to configure buttons and other controls with closures 🎉 A new, pre- article, enjoy! 😀

    2 replies 8 retweets 91 likes
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  5. Retweeted
    Sep 15

    Awesome job with your site , such great usability overall and good job with the meta data, the shared links look awesome

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    1 reply 1 retweet 18 likes
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  6. Sep 14

    New UIKit-based tips & tricks 🚀 ⌨️ Keyboard events: ♻️ Using the responder chain: 🆕 Modern collection views: 📲 Showing view controllers: 🔀 Combine + UIKit:

    20 retweets 66 likes
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  7. Retweeted
    Sep 13

    📖 This week’s article: “How Swift 5.3 enhances SwiftUI’s DSL” 🚀 Thanks a lot to for sponsoring the site (and the podcast!) this week 🙌

    5 retweets 43 likes
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  8. Sep 13

    This week’s article is a roundup of some of the key ways in which Swift 5.3 enhances SwiftUI’s DSL — including implicit self capturing, new control flow features, multiple trailing closures, and more. Hope you’ll find it useful 🙂

    2 replies 31 retweets 164 likes
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  9. Retweeted
    Sep 12

    Last week during my swimming, I finished listening to podcast with . Amazing episode about adopting new features, working on side projects and separate work life from home life.

    4 replies 2 retweets 25 likes
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  10. Sep 11

    Characters can now board and disembark ships, there's a card in the bottom-right corner that shows the currently selected unit's stats, and I also added an indicator that shows how many movement points that a given move will cost. Next up: Attacks, healing, and other actions 😀

    1 reply 32 likes
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  11. Retweeted
    Sep 10

    🎧 New podcast episode: “How big iOS teams typically operate”, with special guest 🚀 Thanks a lot to and for sponsoring this episode 🙌

    9 retweets 30 likes
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  12. Sep 10

    On this new podcast episode, returns to the show to talk about how big iOS teams typically operate, and what smaller teams can learn from that 🚀 Lots of learnings from our combined experiences of working for companies like Spotify and Netflix 😀

    5 replies 9 retweets 101 likes
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  13. Sep 9

    We made it! 🥳 Here is episode 1️⃣0️⃣0️⃣ of Stacktrace, on which and I share our personal milestones since we first launched the show in 2018, and we also play Apple Keynote Poker in preparation for next week's ! 😀

    15 replies 8 retweets 114 likes
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  14. Sep 9

    Fun with pattern matching in Swift 😀 🧩 Overview: 🛠 Custom patterns: 🔀 Switch statements: 🔑 Key paths as patterns: 🔢 Matching multiple enum cases at once:

    1 reply 18 retweets 81 likes
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  15. Retweeted
    Sep 6

    📖 This week’s article: “Building modern collection views in Swift” 🚀 Thanks a lot to for sponsoring the site this week 🙌

    16 retweets 85 likes
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  16. Sep 6

    Many of you have asked for more new UIKit-related content, so this week's article is an overview of the APIs that let us build "modern collection views" in Swift - such as: 🔀 Diffable data sources 📐 Compositional layouts ✅ Cell registrations 🔢 Lists

    4 replies 35 retweets 212 likes
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  17. Sep 3

    Today it's been exactly one year since I launched the new, Publish-powered version of , and with over 15 million page views (and 12 TB of data! 🤯) served to visitors from across the globe, I'm super happy with how everything has turned out! 🥳

    22 replies 6 retweets 280 likes
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  18. Sep 3

    Here's a quick new Swift tip ⚡️ It's most often better to use the 'show' method to push new view controllers onto an app's navigation stack, rather than calling 'pushViewController' directly on the current navigation controller. Here's why, and more 👍

    3 replies 27 retweets 139 likes
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  19. Sep 3

    If you enjoyed hearing talk about ShapeScript on the latest episode of , then I think you’ll find this really exciting 😀

    I finally bit the bullet and open-sourced ShapeScript: The OSS release includes the scripting engine itself and scene graph logic, along with a ShapeScript Viewer app that is basically identical to the App Store version, minus the export feature.
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    1 retweet 17 likes
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  20. Sep 2

    💡 A few Swift code structure tips: 🔀 Avoiding deeply nested code: 🛠 Small utilities: ✂️ Splitting up types: 📦 Structuring model data: ☑️Rule-based logic:

    3 replies 30 retweets 180 likes
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