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19 posts

Building Canopy: A Native GitHub Inbox and a Testbed for Lists

How building a native macOS GitHub notification client exposed surprising gaps in GitHub's public API and stress-tested Lists in a real app.

swiftopen-sourceuikittools

Git Worktrees for iOS: A Practical Setup Guide

How to set up an iOS project for git worktrees, including DerivedData isolation, SPM caching, simulator conflicts, and project file merge strategies.

swiftxcodetools

Building Lists: A High-Performance Diffable Data Source Framework

A deep dive into the design, performance, and trade-offs behind Lists — a pure-Swift replacement for UICollectionViewDiffableDataSource that's up to 1000x faster than Apple's implementation.

swiftopen-sourceuikitswiftuiperformance

Building a Multi-Agent Code Reviewer

What I learned building claude-deep-review, a code review skill that decomposes review into 15 specialized agents running in parallel.

toolsclaude-codecode-reviewai

Orchestrating AI Agents with Claudio: Lessons from Parallelizing Claude Code

What I learned building Claudio, a tool that runs multiple AI coding agents simultaneously using git worktrees

toolsclaude-codegoai

Shipping a CLI on FoundationModels

What it's actually like to build a real tool on Apple's on-device FoundationModels framework — the 4,096 token ceiling, blind token budgeting, and everything in between

swiftapple-intelligencetoolscli

Teaching AI to See SwiftUI Previews

What I learned building a CLI toolset that captures SwiftUI previews programmatically, giving AI coding assistants a visual feedback loop.

swiftswiftuitoolsclaude-code

Using SwiftUI Views in UIViews

Directly add a SwiftUI View to your UIView without a UIHostingController

swiftuiquicktip

Generating SwiftUI Previews for UIKit

How to quickly generate a preview for your UIKit View

swiftUIUIKitquicktip

Cross-Platform Size-Aware SwiftUI

How to quickly extend cross-platform SwiftUI for macOS size classes

swiftuiquicktip

Generating Hashable and Equatable for functions

Often, we pass functions as stored arguments to an object. In this quick tip, we explore how we can still maintain `Hashable` and `Equatable` when we do so, without having to write it ourselves.

swiftfoundationquicktip

View Modifiers

How view modifiers work, tips & tricks for declaring our own, and nipping subtle bugs in the bud.

swiftui

Data Flow Property Wrappers

With so many property wrappers for data flow and data binding in SwiftUI, it's easy to get confused about which one to use. Here, we'll learn about the differences between State, StateObject, Binding, and ObservedObject. We'll look at when to use each one, and the differences between them.

swiftui

Stacks on Stacks

An introduction to some of the most powerful tools in SwiftUI, stack views

swiftUI

An Intro to SwiftUI

What is SwiftUI, why should I use it, and what's the most basic building block?

swiftui

Just Use A Button

Get highlight styles for SwiftUI views in List, without using a NavigationLink

swiftuiquicktip

Using Cross Import Overlays to Improve Your Libraries

How to use cross import overlays in your project, today

swiftspm

Build views, not cells

Why I build `UIView`s, not `UITableViewCell`s.

UIKit

Integrating SwiftUI in Leaf Nodes of your iOS Application

Integrating SwiftUI at the Leaf Nodes

UIKitSwiftUI