April 2020
Beginner
316 pages
8h 20m
English
Content preview from Learn SwiftUI
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Tools and features
Another powerful feature of SwiftUI is hot reloading—or the preview window, as it's called in Xcode. This allows you to make changes to your UI code in real time, without the need to build and rerun the app.
By creating a Preview struct inside your SwiftUI class, you can build and inject mock data, mock navigation, and images straight into your Xcode preview window. So, for example, a SwiftUI project might have a list that is dynamically populated by external data. This would allow you to inject dummy data into the preview window without running your app and calling an API.
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.