fix for SR-13069

Demo/Sources/Demos/Modern/PokedexDemo/Modern.PokedexDemo.MainView.swift

@@ -32,31 +32,46 @@ extension Modern.PokedexDemo {
         // MARK: View
 
         var body: some View {
-            ScrollView {
-                ForEach(self.pokedexEntries.snapshot, id: \.self) { pokedexEntry in
-                    LazyView {
-                        Text(pokedexEntry.snapshot?.$name ?? "")
+            ZStack {
+                ScrollView {
+                    ForEach(self.pokedexEntries.snapshot.prefix(self.visibleItems), id: \.self) { pokedexEntry in
+                        LazyView {
+                            Text(pokedexEntry.snapshot?.$name ?? "")
+                        }
+                        .frame(height: 100)
+                        .frame(minWidth: 0, maxWidth: /*@START_MENU_TOKEN@*/.infinity/*@END_MENU_TOKEN@*/)
                     }
-                    .frame(height: 100)
+                    Button(
+                        action: {
+                            self.visibleItems = min(
+                                self.visibleItems + 50,
+                                self.pokedexEntries.snapshot.count
+                            )
+                        },
+                        label: { Text("Load more") }
+                    )
+                }
+                if self.service.isLoading {
+                    Color(.sRGB, white: 0, opacity: 0.3)
+                        .overlay(
+                            Text("Fetching Pokedex…")
+                                .foregroundColor(.white),
+                            alignment: .center
+                        )
+                        .edgesIgnoringSafeArea(.bottom)
                 }
             }
-            .frame(minWidth: 0, maxWidth: /*@START_MENU_TOKEN@*/.infinity/*@END_MENU_TOKEN@*/)
-            .overlay(
-                InstructionsView(
-                    ("Random", "Sets random coordinate"),
-                    ("Tap", "Sets to tapped coordinate")
-                )
-                .padding(.leading, 10)
-                .padding(.bottom, 40),
-                alignment: .bottomLeading
-            )
             .navigationBarTitle("Pokedex")
         }
 
 
         // MARK: Private
 
-        private let service: Modern.PokedexDemo.Service = .init()
+        @ObservedObject
+        private var service: Modern.PokedexDemo.Service = .init()
+        
+        @State
+        private var visibleItems: Int = 50
     }
 }
 

Demo/Sources/Demos/Modern/PokedexDemo/Modern.PokedexDemo.Service.swift

@@ -13,15 +13,25 @@ extension Modern.PokedexDemo {
 
     // MARK: - Modern.PokedexDemo.Service
 
-    final class Service {
+    final class Service: ObservableObject {
 
         // MARK: Internal
 
-        @Published
-        var isLoading: Bool = true
-
-        @Published
-        var lastError: (error: Modern.PokedexDemo.Service.Error, retry: () -> Void)?
+        private(set) var isLoading: Bool = true {
+            
+            willSet {
+                
+                self.objectWillChange.send()
+            }
+        }
+        
+        private(set) var lastError: (error: Modern.PokedexDemo.Service.Error, retry: () -> Void)? {
+            
+            willSet {
+                
+                self.objectWillChange.send()
+            }
+        }
 
         init() {
 
@@ -49,7 +59,6 @@ extension Modern.PokedexDemo {
                 .handleEvents(
                     receiveSubscription: { [weak self] _ in
 
-                        print("Fetching Pokedex Entries")
                         guard let self = self else {
 
                             return
@@ -61,7 +70,6 @@ extension Modern.PokedexDemo {
                 .sink(
                     receiveCompletion: { [weak self] completion in
 
-                        print("Result (Fetching Pokedex Entries): \(completion)")
                         guard let self = self else {
 
                             return

Sources/Field.Coded.swift

@@ -76,10 +76,10 @@ extension FieldContainer {
          */
         public init<Coder: FieldCoderType>(
             wrappedValue initial: @autoclosure @escaping () -> V,
-            _ keyPath: KeyPathString,
+            _ keyPath: KeyPathString = { fatalError("'keyPath' argument required (SR-13069 workaround)") }(),
             versionHashModifier: @autoclosure @escaping () -> String? = nil,
             previousVersionKeyPath: @autoclosure @escaping () -> String? = nil,
-            coder fieldCoderType: Coder.Type,
+            coder fieldCoderType: Coder.Type = { fatalError("'coder' argument required (SR-13069 workaround)") }(),
             customGetter: ((_ object: ObjectProxy<O>, _ field: ObjectProxy<O>.FieldProxy<V>) -> V)? = nil,
             customSetter: ((_ object: ObjectProxy<O>, _ field: ObjectProxy<O>.FieldProxy<V>, _ newValue: V) -> Void)? = nil,
             affectedByKeyPaths: @autoclosure @escaping () -> Set<KeyPathString> = []
@@ -150,10 +150,10 @@ extension FieldContainer {
          */
         public init(
             wrappedValue initial: @autoclosure @escaping () -> V,
-            _ keyPath: KeyPathString,
+            _ keyPath: KeyPathString = { fatalError("'keyPath' argument required (SR-13069 workaround)") }(),
             versionHashModifier: @autoclosure @escaping () -> String? = nil,
             previousVersionKeyPath: @autoclosure @escaping () -> String? = nil,
-            coder: (encode: (V) -> Data?, decode: (Data?) -> V),
+            coder: (encode: (V) -> Data?, decode: (Data?) -> V) = { fatalError("'coder' argument required (SR-13069 workaround)") }(),
             customGetter: ((_ object: ObjectProxy<O>, _ field: ObjectProxy<O>.FieldProxy<V>) -> V)? = nil,
             customSetter: ((_ object: ObjectProxy<O>, _ field: ObjectProxy<O>.FieldProxy<V>, _ newValue: V) -> Void)? = nil,
             affectedByKeyPaths: @autoclosure @escaping () -> Set<KeyPathString> = []
@@ -478,10 +478,10 @@ extension FieldContainer.Coded where V: FieldOptionalType {
      */
     public init<Coder: FieldCoderType>(
         wrappedValue initial: @autoclosure @escaping () -> V = nil,
-        _ keyPath: KeyPathString,
+        _ keyPath: KeyPathString = { fatalError("'keyPath' argument required (SR-13069 workaround)") }(),
         versionHashModifier: @autoclosure @escaping () -> String? = nil,
         previousVersionKeyPath: @autoclosure @escaping () -> String? = nil,
-        coder: Coder.Type,
+        coder: Coder.Type = { fatalError("'coder' argument required (SR-13069 workaround)") }(),
         customGetter: ((_ object: ObjectProxy<O>, _ field: ObjectProxy<O>.FieldProxy<V>) -> V)? = nil,
         customSetter: ((_ object: ObjectProxy<O>, _ field: ObjectProxy<O>.FieldProxy<V>, _ newValue: V) -> Void)? = nil,
         affectedByKeyPaths: @autoclosure @escaping () -> Set<KeyPathString> = []
@@ -552,10 +552,10 @@ extension FieldContainer.Coded where V: FieldOptionalType {
      */
     public init(
         wrappedValue initial: @autoclosure @escaping () -> V = nil,
-        _ keyPath: KeyPathString,
+        _ keyPath: KeyPathString = { fatalError("'keyPath' argument required (SR-13069 workaround)") }(),
         versionHashModifier: @autoclosure @escaping () -> String? = nil,
         previousVersionKeyPath: @autoclosure @escaping () -> String? = nil,
-        coder: (encode: (V) -> Data?, decode: (Data?) -> V),
+        coder: (encode: (V) -> Data?, decode: (Data?) -> V) = { fatalError("'coder' argument required (SR-13069 workaround)") }(),
         customGetter: ((_ object: ObjectProxy<O>, _ field: ObjectProxy<O>.FieldProxy<V>) -> V)? = nil,
         customSetter: ((_ object: ObjectProxy<O>, _ field: ObjectProxy<O>.FieldProxy<V>, _ newValue: V) -> Void)? = nil,
         affectedByKeyPaths: @autoclosure @escaping () -> Set<KeyPathString> = []
@@ -625,7 +625,7 @@ extension FieldContainer.Coded where V: DefaultNSSecureCodable {
      */
     public init(
         wrappedValue initial: @autoclosure @escaping () -> V,
-        _ keyPath: KeyPathString,
+        _ keyPath: KeyPathString = { fatalError("'keyPath' argument required (SR-13069 workaround)") }(),
         versionHashModifier: @autoclosure @escaping () -> String? = nil,
         previousVersionKeyPath: @autoclosure @escaping () -> String? = nil,
         customGetter: ((_ object: ObjectProxy<O>, _ field: ObjectProxy<O>.FieldProxy<V>) -> V)? = nil,
@@ -696,7 +696,7 @@ extension FieldContainer.Coded where V: FieldOptionalType, V.Wrapped: DefaultNSS
      */
     public init(
         wrappedValue initial: @autoclosure @escaping () -> V = nil,
-        _ keyPath: KeyPathString,
+        _ keyPath: KeyPathString = { fatalError("'keyPath' argument required (SR-13069 workaround)") }(),
         versionHashModifier: @autoclosure @escaping () -> String? = nil,
         previousVersionKeyPath: @autoclosure @escaping () -> String? = nil,
         customGetter: ((_ object: ObjectProxy<O>, _ field: ObjectProxy<O>.FieldProxy<V>) -> V)? = nil,

Sources/Field.Stored.swift

@@ -69,7 +69,7 @@ extension FieldContainer {
          */
         public init(
             wrappedValue initial: @autoclosure @escaping () -> V,
-            _ keyPath: KeyPathString,
+            _ keyPath: KeyPathString = { fatalError("'keyPath' argument required (SR-13069 workaround)") }(),
             versionHashModifier: @autoclosure @escaping () -> String? = nil,
             previousVersionKeyPath: @autoclosure @escaping () -> String? = nil,
             customGetter: ((_ object: ObjectProxy<O>, _ field: ObjectProxy<O>.FieldProxy<V>) -> V)? = nil,
@@ -370,7 +370,7 @@ extension FieldContainer.Stored where V: FieldOptionalType {
      */
     public init(
         wrappedValue initial: @autoclosure @escaping () -> V = nil,
-        _ keyPath: KeyPathString,
+        _ keyPath: KeyPathString = { fatalError("'keyPath' argument required (SR-13069 workaround)") }(),
         versionHashModifier: @autoclosure @escaping () -> String? = nil,
         previousVersionKeyPath: @autoclosure @escaping () -> String? = nil,
         customGetter: ((_ object: ObjectProxy<O>, _ field: ObjectProxy<O>.FieldProxy<V>) -> V)? = nil,