Why SwiftUI views are structs (and why that matters)

Context

SwiftUI views are structs. This is a deliberate design choice.

The snippet

struct MyView: View {
    var body: some View {
        Text("Hello")
    }
}

Why this matters

Structs are cheap to create and discard. They encourage immutability and make recomputation safe.

Views describe what the UI should look like, not how long it should live.

Use it when…

• modeling UI as data
• relying on SwiftUI’s diffing system
• keeping views declarative

Avoid it when…

• assuming views have identity
• storing mutable state in the view itself

Takeaway: Views are values so SwiftUI can rebuild them freely.

Context

• Why SwiftUI recomputes views

In practice

• Extracting a reusable SwiftUI component cleanly