Vaish - High performance iOS apps: optimize your code for better apps

This book is organized in five parts. Each part is comprised of one or more chapters that detail the theme of the particular part. Each chapter begins with a brief abstract outlining the topics that will be covered.

discusses the aspects that we want to optimize and outlines the parameters we want to measure as part of tracking app performance.

addresses memory management. It describes the memory management model and object reference types. It also discusses best practices for design patterns that impact memory consumption, namely singleton and dependency injection.

provides an overview of concurrent programming. It describes the various options available and gives a comparative analysis.

provides in-depth coverage of the application lifecycle. It details how lifecycle events can be utilized to ensure resources are used effectively.

provides an in-depth review of security. It describes how enhanced security can slow down an app and discusses what can be done for an effective trade-off.

covers testing, and performance testing in particular. It also discusses continuous integration and automation.

discusses instrumentation and analytics, and how it can be used to collect performance-related data from apps in production.

provides an outline of the changes in this release and how they impact the code you write from the perspective of performance.

Code snippets are provided throughout the book where applicable. Several of these snippets can be used either as is or with minimal modifications in your app. Other snippets may need to be further adapted to suit your app.

Each chapter also provides a set of best practices associated with the topic. It may not always be possible to follow all of the best practices in a single app. The decisions of which ones you want to trade off against others will be based on your apps requirements.