Custom SF Symbols: The Variable Template And The Three Required Sources
SF Symbols creates 27 variations from three source designs. The variable template, compatible-data path requirements, rendering modes, and the Xcode handoff.
AI & TechnologyWriting
Thoughts on design, development, AI infrastructure, and building products.
HealthKit Workout Lifecycle: HKWorkoutSession States And The iOS 26 Cross-Platform Surface
watchOS workout sessions move through a six-state lifecycle. iOS 26 brought HKWorkoutSession to iPhone. The state machine, the live builder, and the delegate.
AI & TechnologySwiftUI Layout Protocol: Building Custom Layouts From sizeThatFits To placeSubviews
iOS 16's Layout protocol lets apps build custom layouts with two methods. sizeThatFits, placeSubviews, the proposal contract, layout values, and caching.
AI & TechnologyWriting Tools API: How Apps Plug Into Apple Intelligence's Writing Layer
iOS 18 introduced Writing Tools. iOS 26 makes adoption a single property for standard text views, and a designed coordinator API for custom text engines.
AI & TechnologyvisionOS Spatial Patterns Beyond the Window
Apps that float an iPad UI on Vision Pro miss the platform. Windows, Volumes, Immersive Spaces, ornaments, attachments: the visionOS-native vocabulary.
AI & TechnologySymbol Effects: SwiftUI's Built-In Animation Vocabulary For Every Icon
SF Symbols ships an animation vocabulary every iOS app can speak. Bounce, pulse, scale, replace, variable color, breathe: already designed, accessible, free.
AI & TechnologySwiftData Migrations: Lightweight vs Custom, And When You Don't Need a V2
SwiftData's migration model uses VersionedSchema, MigrationStage, and SchemaMigrationPlan. Most schema changes don't need a V2 schema; the cases that do, do.
AI & TechnologytvOS Focus Engine: SwiftUI Patterns for the Siri Remote
Apple TV navigates by focus, not touch. SwiftUI's .focusable, @FocusState, focusSection, and prefersDefaultFocus are the vocabulary. The patterns that ship.
AI & TechnologyApple's New Speech Framework: SpeechAnalyzer vs SFSpeechRecognizer
iOS 26 introduces SpeechAnalyzer with SpeechTranscriber + SpeechDetector modules, an on-device replacement for SFSpeechRecognizer. When to migrate.
AI & TechnologySwift Testing: The Framework Replacing XCTest, and What Stays In XCTest
Swift Testing ships with Xcode 16+ and Swift 6. Macros, traits, parametrized tests, parallel by default. Migrate incrementally; UI tests stay in XCTest.
AI & TechnologyApple Vision Framework: On-Device CV Most Devs Skip
Apple Vision ships more than two dozen on-device CV operations. Most devs default to OpenAI Vision for tasks Vision performs in milliseconds, free, on-device.
AI & TechnologySF Pro: Variable Axes, Optical Sizing, And The Dynamic Type Contract
Apple's system font ships with three variable axes and continuous optical sizing. The vocabulary that makes typography work across the Apple platforms.
AI & TechnologyExternal Publications
Technical writing at Introl
Local LLM Hardware Pricing Guide 2025
Comprehensive hardware recommendations and cost analysis for running large language models locally.
H100 vs. H200 vs. B200: Choosing the Right NVIDIA GPUs for Your AI Workload
GPU selection guide comparing NVIDIA's latest datacenter accelerators for different AI workloads.
TPU Architecture: Complete Guide to Google's 7 Generations
Deep technical dive into Google's Tensor Processing Unit evolution from TPUv1 to TPUv5.
GPU Memory Pooling in Multi-Tenant Kubernetes
Resource sharing strategies for GPU clusters in containerized environments.
Ray Clusters: Distributed AI Computing Infrastructure
Guide to building and managing distributed AI computing with Ray framework.
DeepSeek V3 Open Source AI Cost Advantage
Analysis of open source LLM economics and DeepSeek's competitive positioning.
NVIDIA Vera Rubin GPU 600kW Racks 2027
Future datacenter power requirements and NVIDIA's next-generation GPU roadmap.
SMR Nuclear Power for AI Data Centers
Small modular reactor solutions for powering next-generation AI infrastructure.
DeepSeek MHC Architecture Breakthrough
Technical analysis of DeepSeek's Multi-Head Compression architecture innovations.