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0077-effectful-state-management-unidirectional-effects/PrimeTime/PrimeTime.playground/Pages/Counter.xcplaygroundpage/Contents.swift

@@ -6,13 +6,8 @@ import SwiftUI
 PlaygroundPage.current.liveView = UIHostingController(
   rootView: CounterView(
     store: Store<CounterViewState, CounterViewAction>(
-      initialValue: CounterViewState(
-        alertNthPrime: nil,
-        count: 0,
-        favoritePrimes: [],
-        isNthPrimeButtonDisabled: false
-      ),
-      reducer: logging(counterViewReducer)
+      initialValue: (0, []),
+      reducer: counterViewReducer
     )
   )
 )

0078-effectful-state-management-async-effects/PrimeTime/ComposableArchitecture/ComposableArchitecture.h

@@ -0,0 +1,19 @@
+//
+//  ComposableArchitecture.h
+//  ComposableArchitecture
+//
+//  Created by Stephen Celis on 9/8/19.
+//  Copyright © 2019 Point-Free. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+//! Project version number for ComposableArchitecture.
+FOUNDATION_EXPORT double ComposableArchitectureVersionNumber;
+
+//! Project version string for ComposableArchitecture.
+FOUNDATION_EXPORT const unsigned char ComposableArchitectureVersionString[];
+
+// In this header, you should import all the public headers of your framework using statements like #import <ComposableArchitecture/PublicHeader.h>
+
+

0078-effectful-state-management-async-effects/PrimeTime/ComposableArchitecture/ComposableArchitecture.swift

@@ -0,0 +1,106 @@
+import Combine
+import SwiftUI
+
+struct Parallel<A> {
+  let run: (@escaping (A) -> Void) -> Void
+}
+
+//DispatchQueue.main.async(execute: () -> Void) -> Void
+//UIView.animate(withDuration: TimeInterval, animations: () -> Void) -> Void
+//URLSession.shared.dataTask(with: URL, completionHandler: (Data?, URLResponse?, Error?) -> Void) -> Void
+
+public typealias Effect<Action> = (@escaping (Action) -> Void) -> Void
+
+public typealias Reducer<Value, Action> = (inout Value, Action) -> [Effect<Action>]
+
+//Button.init("Save", action: <#() -> Void#>)
+
+public final class Store<Value, Action>: ObservableObject {
+  private let reducer: Reducer<Value, Action>
+  @Published public private(set) var value: Value
+  private var cancellable: Cancellable?
+
+  public init(initialValue: Value, reducer: @escaping Reducer<Value, Action>) {
+    self.reducer = reducer
+    self.value = initialValue
+  }
+
+  public func send(_ action: Action) {
+    let effects = self.reducer(&self.value, action)
+    effects.forEach { effect in
+      effect(self.send)
+    }
+//    DispatchQueue.global().async {
+//      effects.forEach { effect in
+//        if let action = effect() {
+//          DispatchQueue.main.async {
+//            self.send(action)
+//          }
+//        }
+//      }
+//    }
+  }
+
+  public func view<LocalValue, LocalAction>(
+    value toLocalValue: @escaping (Value) -> LocalValue,
+    action toGlobalAction: @escaping (LocalAction) -> Action
+  ) -> Store<LocalValue, LocalAction> {
+    let localStore = Store<LocalValue, LocalAction>(
+      initialValue: toLocalValue(self.value),
+      reducer: { localValue, localAction in
+        self.send(toGlobalAction(localAction))
+        localValue = toLocalValue(self.value)
+        return []
+    }
+    )
+    localStore.cancellable = self.$value.sink { [weak localStore] newValue in
+      localStore?.value = toLocalValue(newValue)
+    }
+    return localStore
+  }
+}
+
+public func combine<Value, Action>(
+  _ reducers: Reducer<Value, Action>...
+) -> Reducer<Value, Action> {
+  return { value, action in
+    let effects = reducers.flatMap { $0(&value, action) }
+    return effects
+  }
+}
+
+public func pullback<LocalValue, GlobalValue, LocalAction, GlobalAction>(
+  _ reducer: @escaping Reducer<LocalValue, LocalAction>,
+  value: WritableKeyPath<GlobalValue, LocalValue>,
+  action: WritableKeyPath<GlobalAction, LocalAction?>
+) -> Reducer<GlobalValue, GlobalAction> {
+  return { globalValue, globalAction in
+    guard let localAction = globalAction[keyPath: action] else { return [] }
+    let localEffects = reducer(&globalValue[keyPath: value], localAction)
+    return localEffects.map { localEffect in
+      { callback in
+//        guard let localAction = localEffect() else { return nil }
+        localEffect { localAction in
+          var globalAction = globalAction
+          globalAction[keyPath: action] = localAction
+          callback(globalAction)
+        }
+      }
+    }
+  }
+}
+
+public func logging<Value, Action>(
+  _ reducer: @escaping Reducer<Value, Action>
+) -> Reducer<Value, Action> {
+  return { value, action in
+    let effects = reducer(&value, action)
+    let newValue = value
+    return [{ _ in
+      print("Action: \(action)")
+      print("Value:")
+      dump(newValue)
+      print("---")
+    }] + effects
+  }
+}

0078-effectful-state-management-async-effects/PrimeTime/ComposableArchitecture/Info.plist

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>$(CURRENT_PROJECT_VERSION)</string>
+</dict>
+</plist>

0078-effectful-state-management-async-effects/PrimeTime/ComposableArchitectureTests/ComposableArchitectureTests.swift

@@ -0,0 +1,34 @@
+//
+//  ComposableArchitectureTests.swift
+//  ComposableArchitectureTests
+//
+//  Created by Stephen Celis on 9/8/19.
+//  Copyright © 2019 Point-Free. All rights reserved.
+//
+
+import XCTest
+@testable import ComposableArchitecture
+
+class ComposableArchitectureTests: XCTestCase {
+
+    override func setUp() {
+        // Put setup code here. This method is called before the invocation of each test method in the class.
+    }
+
+    override func tearDown() {
+        // Put teardown code here. This method is called after the invocation of each test method in the class.
+    }
+
+    func testExample() {
+        // This is an example of a functional test case.
+        // Use XCTAssert and related functions to verify your tests produce the correct results.
+    }
+
+    func testPerformanceExample() {
+        // This is an example of a performance test case.
+        self.measure {
+            // Put the code you want to measure the time of here.
+        }
+    }
+
+}

0078-effectful-state-management-async-effects/PrimeTime/ComposableArchitectureTests/Info.plist

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+</dict>
+</plist>

0078-effectful-state-management-async-effects/PrimeTime/Counter/Counter.h

@@ -0,0 +1,19 @@
+//
+//  Counter.h
+//  Counter
+//
+//  Created by Stephen Celis on 9/8/19.
+//  Copyright © 2019 Point-Free. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+//! Project version number for Counter.
+FOUNDATION_EXPORT double CounterVersionNumber;
+
+//! Project version string for Counter.
+FOUNDATION_EXPORT const unsigned char CounterVersionString[];
+
+// In this header, you should import all the public headers of your framework using statements like #import <Counter/PublicHeader.h>
+
+