- swift
- swift-zero-expert
- swift-fundamentals
Swift from Zero to Expert #5: Functions — first-class citizens
Parameters, labels, inout, function types and functions as values. The gateway to closures and functional programming.
Writing about Swift.
Real-world iOS engineering, explained clearly.
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- swift
- ios
- performance
Mastering Instruments (Part 3): Scientific Method, Advanced Time Profiler, and Profiling at Scale
Learn to diagnose performance issues as a scientific process. Master Weight vs Self-Weight, Charge/Prune/Flatten, and scale profiling with xctrace.
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- swift
- swift-zero-expert
- swift-fundamentals
Swift from Zero to Expert #4: Control Flow — from if/else to pattern matching
if/else, exhaustive switch with pattern matching, guard as a philosophy, and how the compiler optimizes your decisions into jump tables.
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- swift
- ios
- performance
Mastering Instruments (Part 2.5): malloc, free, and ARC — How Memory Works Under the Hood
Viscerally understand what happens when your code runs. Visualize malloc, free, reference counting, and retain cycles with interactive components.
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- swift
- swift-zero-expert
- swift-fundamentals
Swift from Zero to Expert #3: Strings and Characters — much more than text
Unicode scalars, grapheme clusters, why string[0] doesn't exist in Swift, and how Substring shares memory with the original String.
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- swift
- swift-zero-expert
- swift-fundamentals
Swift from Zero to Expert #2: Collections — Array, Set and Dictionary under the hood
Discover how Swift's collections work inside: when to use each one, their algorithmic complexity, and the elegance of copy-on-write.
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- swift
- swift-zero-expert
- swift-fundamentals
Swift from Zero to Expert #1: Data types, operators, and how Swift thinks about memory
First article in the Swift from Zero to Expert series. We explore fundamental data types, operators, and why Swift decides to put things on the stack.
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- swift
- ios
- performance
Mastering Instruments (Part 2): Stack vs. Heap, Symbolication, and Early Detection
Understand how your app manages memory, why dSYMs are critical, and how to detect performance issues before opening Instruments.
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- swift
- ios
- performance
Mastering Xcode Instruments: Mental Models, Bottlenecks, and Signposts
Learn to think like a performance detective. We break down Instruments from mental models to practical hang resolution and code instrumentation with Signposts.
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- swift
- concurrency
- ios
Complete Swift 6.2 Guide: Approachable Concurrency Explained
Interactive guide covering the 5 feature flags of Approachable Concurrency in Xcode 26, recommended configuration, and step-by-step migration guide.