Book Image

Mastering macOS Programming.

By : Gregory Casamento
Book Image

Mastering macOS Programming.

By: Gregory Casamento

Overview of this book

macOS continues to lead the way in desktop operating systems, with its tight integration across the Apple ecosystem of platforms and devices. With this book, you will get an in-depth knowledge of working on macOS, enabling you to unleash the full potential of the latest version using Swift 3 to build applications. This book will help you broaden your horizons by taking your programming skills to next level. The initial chapters will show you all about the environment that surrounds a developer at the start of a project. It introduces you to the new features that Swift 3 and Xcode 8 offers and also covers the common design patterns that you need to know for planning anything more than trivial projects. You will then learn the advanced Swift programming concepts, including memory management, generics, protocol orientated and functional programming and with this knowledge you will be able to tackle the next several chapters that deal with Apple’s own Cocoa frameworks. It also covers AppKit, Foundation, and Core Data in detail which is a part of the Cocoa umbrella framework. The rest of the book will cover the challenges posed by asynchronous programming, error handling, debugging, and many other areas that are an indispensable part of producing software in a professional environment. By the end of this book, you will be well acquainted with Swift, Cocoa, and AppKit, as well as a plethora of other essential tools, and you will be ready to tackle much more complex and advanced software projects.
Table of Contents (28 chapters)
Title Page
About the Author
About the Reviewer
Customer Feedback
LLDB and the Command Line

Understanding schemes

Imagine a tool that, with a couple of mouse clicks, or even a keyboard shortcut, will change the display name of an app from Flappy Mushroom Test to Flappy Mushroom, change the app's Bundle ID, swap one set of server endpoints for another, and to cap it off, change your application region from system region to Iceland.

That tool, in Xcode, is scheme selection. If you haven't used schemes before, we're talking about this thing:

It's the SalesTaxCalc bit, in this example. If you click on it with a new project, you'll see this:

But before we accept the invitation to create a New Scheme..., or edit the one we have already, let's see why they're of interest to us.

What schemes actually do

Basically, schemes are way to control many of the things that happen when you hit the Run button. There are a whole host of options that we may wish to change when running an app under different circumstances (whether real or simulated), and Xcode exposes to us dozens of settings that are brought...