Conventions used

There are a number of text conventions used throughout this book.

Code in text: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "Let's create a SwiftUI app called FetchContactsApp."

A block of code is set as follows:

guard managedObjectContext.hasChanges else { return }
do {
    try managedObjectContext.save()
} catch {
    print(error)
}

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

Image(item.image)
	//...
    .shadow(radius: 5)
    .matchedGeometryEffect(id: item.image,
                           in: animation)

Bold: Indicates a new term, an important word, or words that you see on screen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "Select Swift file and then click Next."

Tips or important notes

Appear like this.