Glossary

How to discover and call Apple's private APIs for debugging and tooling — what they are, how to find them, and why you must never ship them in a production app.

A practical reference for Claude Code CLI commands — from installation and session management to slash commands, keyboard shortcuts, permission modes, and advanced automation patterns.

A plain-English dictionary for CoreBluetooth — what every confusingly-named class, concept, and quirk actually means, why it matters, and a concise code example for each.

How dynamic linking works in Xcode — what dylibs and frameworks are, how dyld resolves symbols at launch, and the trade-offs compared to static linking.

Extreme Programming concepts — values, practices, and roles — mapped to an iOS development context with what, why, and how for each.

A practical reference for everyday Linux commands — navigation, files, text manipulation, permissions, processes, and more. Each entry covers what the command does, when to reach for it, and a real example.

A plain-English dictionary for the Mach-O binary format — what every header field, segment, section, and load command actually means, why the layout exists the way it does, and how to inspect it yourself with the tools Apple ships.

A plain-English guide to Objective-C runtime method swizzling — what it actually does under the hood, when you'd ever reach for it, and how to do it without shooting yourself in the foot.

A plain-English dictionary for Core NFC on iOS — what every confusingly-named class, session type, and protocol quirk actually means, why it matters, and a concise Swift code example for each.

A plain-English dictionary for Swift property wrappers — what @propertyWrapper, wrappedValue, and projectedValue actually do, why they exist, and how to write your own without getting confused by the dollar sign.

A practical reference for SSH and its companion tools — connecting to servers, managing keys, tunnelling ports, transferring files, and hardening your setup, with real examples throughout.

How static linking works in Xcode — what happens at build time, how static libraries and XCFrameworks are merged into your binary, and the trade-offs you actually care about.

Keywords, quirks, and mental models for Swift Concurrency — from async/await basics to actors, Sendable, task groups, and the traps that catch everyone.

A complete API reference for Swift Testing — every macro, trait, and helper with its purpose, usage scenario, and a code example.

A practical reference for xcodebuild and the Xcode command-line toolchain — building, testing, archiving, signing, simulator control, and more with real examples.