id(_:)

定義

func id<ID: Hashable>(_ id: ID) -> some View

重要觀念

we use id() to tell SwiftUI that a view is NO LONGER the same view it was. 👉 The SwiftUI Lab

參考資料

🍎 Apple Doc

• SwiftUI ⟩ View ⟩ .id(_:)

📗 參考書

... the view never reloads the image. The simplest way to solve this problem is by telling SwiftUI that it should change the identity of the view. 👉 Thinking in SwiftUI - Ch. 2 View Updates (p.41)

📰 待讀文章

• id(_): Identifying SwiftUI Views 👉 The SwiftUI Lab