couchdeveloper · July 24, 2021 15:18 · Jul 24, 2021
diff --git a/gistfile1.txt b/gistfile1.txt
@@ -0,0 +1,23 @@
+import SwiftUI
+
+// Demonstrates issue when assigning `@State` values in the initialiser
+
+struct ContentView: View {
+    @State var string: String = "Initial" // default initialise the value
+
+    init(string: String) {
+        self.string = string // assign it again with value `string`
+        // We expect that `self.string` has been assigned the value `string`.
+        // However, due to how SwiftUI manages the state store, this is not always the case!
+        print("init: \(string), self.string: \(self.string)")        
+    }
+
+    var body: some View {
+        return Text(string)
+    }
+}
+
+import PlaygroundSupport
+
+// We expect that the view renders "Hello World!", but it renders "Initial"
+PlaygroundPage.current.setLiveView(ContentView(string: "Hello World!"))