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Explore Apple code through LLDB, Python, and Dtrace! Discover the powerful secrets of Apple's software debugger, LLDB, which can extract more information from any program than you ever imagined. In this guide, you'll find that debugging can be an enjoyable process, enhancing your understanding of software. You'll learn to identify bugs more efficiently and see how other developers have tackled similar issues. Additionally, you'll create custom debugging scripts to uncover the secrets behind any intriguing piece of code. This resource is designed for intermediate to advanced iOS/macOS developers already familiar with Swift or Objective-C, aiming to elevate their debugging skills. Key topics include mastering LLDB and its extensive subcommands, understanding low-level components for extracting useful information, and utilizing LLDB’s Python module to craft powerful custom debugging commands. You'll also explore Dtrace, a dynamic tracing framework, and learn to write D scripts to query anything you’re curious about on your macOS machine. With practical case studies, you'll quickly address real-world challenges faced by iOS and macOS developers in their daily workflows. After engaging with this material, you’ll possess the tools and knowledge to tackle even the most obscure questions about your code or that of others.

Learn reactive programming in Swift with RxSwift! The popularity of reactive programming is rising across various platforms and languages. Rx enables developers to build applications quickly with code that is easily understood by other Rx developers, even on different platforms. This resource will guide you in using the RxSwift port to create complex reactive applications on iOS and address common design issues effectively. You'll gain full control over the library, harnessing the complete power of reactive programming in your projects. This book is tailored for iOS developers who are comfortable with iOS and Swift and wish to explore RxSwift in depth. It covers essential topics, starting with an introduction to the reactive programming paradigm, including terminology and initial usage of RxSwift in projects. You'll learn to manage asynchronous event sequences through Observables and Observers, and explore event handling via filtering, transforming, combining, and time operators. The integration of RxCocoa simplifies UI development with UIKit and Cocoa. Intermediate chapters delve into reactive networking, multi-threading, and error handling, while advanced topics include MVVM architecture, scene-based navigation, and data exposure via services. By the end, you’ll have hands-on experience tackling common issues in a reactive paradigm and be well-prepared to develop your own Rx patterns and solutions!