🔰init Binding
SwiftUI ⟩ Data Flow ⟩ Binding ⟩ init
// custom control
struct SlidersForSize: View {
@Binding var size: CGSize // ⭐️ Binding variable
var body: some View { ... }
}
extension SlidersForSize {
init(_ size: Binding<CGSize>) {
self._size = size // ⭐️ 注意:不是 `self.size = size` ❗️❗️❗️
}
}
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