The SwiftUI trigger-value pattern

As noted in Swift with Majid, the trigger-value pattern is becoming a thing in SwiftUI.

👉 Trigger value pattern in SwiftUI

Basically, this pattern lets you “trigger” some user experience when some specified data changes.

In one example, when a list of messages changes, then the app automatically immediately trigger some haptic/sensory feedback. And it only takes one extra line of code.

    .sensoryFeedback(.impact, trigger: messages)

The post gives another example of flashing the scroll indicator in the same manner.

And it goes into making your own custom triggers.

This is cool stuff and such a simple + powerful way to make your app more responsive.