4. An Introduction to Xcode 12 Playgrounds
Before introducing the Swift programming language in the chapters that follow, it is first worth learning about a feature of Xcode known as Playgrounds. This is a feature of Xcode designed to make learning Swift and experimenting with the iOS SDK much easier. The concepts covered in this chapter can be put to use when experimenting with many of the introductory Swift code examples contained in the chapters that follow.
4.1 What is a Playground?
A playground is an interactive environment where Swift code can be entered and executed with the results appearing in real-time. This makes an ideal environment in which to learn the syntax of Swift and the visual aspects of iOS app development without the need ...
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