Engineering domain

Swift & iOS

Swift, SwiftUI, UIKit, concurrency, and the iOS platform.

251 linked concepts~3 hr 6 min reading estimate

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Senior iOS Interview Knowledge Recap

Fast senior iOS interview hit points, protocol questions, code-review exercises, concise answers, and implementation challenges.

~28 min reading

Swift Code Quizzes: Choose the Valid Line and Find the Bug

Practice Swift syntax and compiler reasoning with choose-the-valid-line and find-the-bug exercises.

~11 min reading

Swift Language Fundamentals

UIKit and Swift Fundamentals

Explore UIKit layout, Swift fundamentals, testing, and practical interoperation between modern iOS frameworks.

~6 min reading

Swift Keywords and Syntax Quick Reference

A grouped lookup for Swift keywords, declarations, modifiers, operators, and language syntax.

~13 min reading

Swift Types, Protocols, and Generics

Learn how Swift protocols, generics, associated types, existentials, opaque types, and type aliases affect API design.

~31 min reading

SwiftUI

Modern SwiftUI Engineering Reference

A practical guide to SwiftUI state ownership, @Binding, Observation, navigation, lifecycle, layout, and SwiftData.

~20 min reading

SwiftUI and Combine

Understand SwiftUI state ownership and Combine-era observation, publishers, cancellation, and view composition.

~9 min reading

UIKit

Mobile System Design and Engineering Leadership

Practice mobile system design, reliability, delivery, technical leadership, and engineering tradeoff questions.

~15 min reading

Swift Concurrency & GCD

Swift Concurrency 6.4 — Quick Reference

Review Swift concurrency, structured tasks, actor isolation, Sendable, cancellation, and Swift 6.4 updates.

~14 min reading

Concurrency and Memory

Review GCD scheduling, actor basics, ARC ownership, retain cycles, and concurrency fundamentals.

~7 min reading

Networking & API Design

Networking, Security, and Data

Design networking, authentication, TLS, token refresh, persistence, and failure handling for mobile applications.

~5 min reading

Modern iOS Codebase Blueprint

Build a modern iOS codebase around feature boundaries, repositories, injected dependencies, and testable composition.

~17 min reading