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John and Rambo revisit the topic of closures and how their use has evolved since Objective-C’s blocks, and then go on a behind-the-scenes deep dive into AirBuddy 3. Links Closure capturing in Swift Rust’s move keyword AirBuddy

John and Rambo discuss the pros and cons of using AI assistants and agents in the context of open source, as well as how unit testing has evolved on Apple’s platforms during the last few years, with the introduction of tools such as Swift Testing. Links Swift Testing XCTest Using async let in Swift

John and Rambo discuss some of the new APIs and technologies introduced at WWDC26, including new Swift features, and changes to frameworks like AppKit and FoundationModels. Also, the state of Swift 6, and WWDC video watching strategies. Links Apple’s live WWDC26 presentation What’s new in Swift fr…

John builds a cross-platform UI framework in Rust, and Rambo uses the macOS virtualization system to create a virtual iPhone. Links Fixing SwiftPM SSH fingerprint issues in Xcode Raylib wgpu SDL3 “How Clay's UI Layout Algorithm Works” by Nic Barker Swift’s result builders Rust macros VirtualBuddy …

Using Android as an iOS user, and the state of Swift Package Manager, including how it could become a more full-featured orchestration tool for Xcode projects. Links How to contact us AYN Thor VCMI for running Heroes of Might and Magic 3 on Android Cocoon launcher NPM Cargo Swift Package Index Tui…

Stacktrace is back (again)! But this time, we’re here to stay, at least for the time being, with a new monthly schedule. On this first episode of the 2026 season, John and Rambo discuss how they’re using AI agents when working on different projects, and how to approach learning new programming lang…

Stacktrace is back! John and Rambo check their hype levels for WWDC24, and discuss how AI might fit into Apple’s plans for this year’s releases. Also, Xcode wishes, and the challenges of building distributed systems. Links Core ML Rabbit R1 Nvidia DLSS Zed text editor GPT-4 Vision

John and Rambo reflect on what they’ve been learning and how they’ve been aiming to improve as developers during 2023. Also, tips for getting better at debugging, deploying generative AI within existing apps, and are view models really such a good fit for SwiftUI views? Links ChibiStudio OpenAI’s …

Reactions to Apple’s “Scary fast” event, Rambo’s review of the iPhone 15 Pro Max, and under the hood of CleanupBuddy. Links Behind the scenes of Apple’s “Scary fast” event Carrot Weather CleanupBuddy CGEventTapCreate Halide