![]() Some are easy to use, but rather limited, while others are much harder to use, but give you a lot more capabilities. There are plenty of ways to save data for your app. It needs to remember the user’s name and birthday, to show on some view controller, or maybe even for a countdown on their Apple Watch. We add the new method observe() to the property wrapper, which returns an instance of observation.So, let’s say we have an app that needs to remember a few simple things that the user puts in when they first load the app.
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