In this article, we’ll make an Updater protocol. Updaters will enforce a set of rules that dictate when a view should update. In particular, we’ll make three separate updaters to suit different situations:
Updaters will be assigned in the same way that ViewModifiers are assigned.
Views propagate changes by recalculating their body, which in turn tells each subview to recalculate its body, so on and so forth. Views tend to…
Views are easy to use, easy to reuse, and easily composable. You know how to use them, I know how to use them, so this is not going to be an article on how to use them but rather on how the View protocol works. In doing this, I will show you how to make a simple Text protocol that can be used to build strings rather than views.
What we’re making will be simple. We will not concern ourselves with features like the environment or preferences, nor will we concern ourselves with statefulness or modifiers. …
Imagine you want to store an object (with a publisher) and update it based on some event. One way to accomplish this would be the following:
A basic implementation may look like this: