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b/0252-observation-pt1/ObservationExplorations/ObservationExplorations.xcodeproj/project.xcworkspace/contents.xcworkspacedata new file mode 100644 index 00000000..919434a6 --- /dev/null +++ b/0252-observation-pt1/ObservationExplorations/ObservationExplorations.xcodeproj/project.xcworkspace/contents.xcworkspacedata @@ -0,0 +1,7 @@ + + + + + diff --git a/0252-observation-pt1/ObservationExplorations/ObservationExplorations.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist b/0252-observation-pt1/ObservationExplorations/ObservationExplorations.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist new file mode 100644 index 00000000..18d98100 --- /dev/null +++ b/0252-observation-pt1/ObservationExplorations/ObservationExplorations.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist @@ -0,0 +1,8 @@ + + + + + IDEDidComputeMac32BitWarning + + + diff --git a/0252-observation-pt1/ObservationExplorations/ObservationExplorations.xcodeproj/xcshareddata/xcschemes/ObservationExplorations.xcscheme b/0252-observation-pt1/ObservationExplorations/ObservationExplorations.xcodeproj/xcshareddata/xcschemes/ObservationExplorations.xcscheme new file mode 100644 index 00000000..8b0ee21f --- /dev/null +++ b/0252-observation-pt1/ObservationExplorations/ObservationExplorations.xcodeproj/xcshareddata/xcschemes/ObservationExplorations.xcscheme @@ -0,0 +1,106 @@ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + diff --git a/0252-observation-pt1/ObservationExplorations/ObservationExplorations/AppView.swift b/0252-observation-pt1/ObservationExplorations/ObservationExplorations/AppView.swift new file mode 100644 index 00000000..c811da76 --- /dev/null +++ b/0252-observation-pt1/ObservationExplorations/ObservationExplorations/AppView.swift @@ -0,0 +1,58 @@ +import Combine +import SwiftUI + +class AppModel: ObservableObject { + @Published var tab1 = CounterModel() + @Published var tab2 = CounterModel() + @Published var tab3 = CounterModel() + + private var cancellables: Set = [] + + init() { + self.tab1.$count.sink { [weak self] _ in + self?.objectWillChange.send() + } + .store(in: &self.cancellables) + self.tab2.objectWillChange.sink { [weak self] in + self?.objectWillChange.send() + } + .store(in: &self.cancellables) + self.tab3.objectWillChange.sink { [weak self] in + self?.objectWillChange.send() + } + .store(in: &self.cancellables) + } +} + +struct AppView: View { + @ObservedObject var model: AppModel + + var body: some View { + let _ = Self._printChanges() + + TabView { + NavigationStack { + CounterView(model: self.model.tab1) + .navigationTitle(Text("Counter 1")) + } + .badge(self.model.tab1.count) + .tabItem { Text("Counter 1") } + + NavigationStack { + CounterView(model: self.model.tab2) + .navigationTitle(Text("Counter 2")) + } + .tabItem { Text("Counter 2") } + + NavigationStack { + CounterView(model: self.model.tab3) + .navigationTitle(Text("Counter 3")) + } + .tabItem { Text("Counter 3") } + } + } +} + +#Preview { + AppView(model: AppModel()) +} diff --git a/0252-observation-pt1/ObservationExplorations/ObservationExplorations/Assets.xcassets/AccentColor.colorset/Contents.json b/0252-observation-pt1/ObservationExplorations/ObservationExplorations/Assets.xcassets/AccentColor.colorset/Contents.json new file mode 100644 index 00000000..eb878970 --- /dev/null +++ b/0252-observation-pt1/ObservationExplorations/ObservationExplorations/Assets.xcassets/AccentColor.colorset/Contents.json @@ -0,0 +1,11 @@ +{ + "colors" : [ + { + "idiom" : "universal" + } + ], + "info" : { + "author" : "xcode", + "version" : 1 + } +} diff --git a/0252-observation-pt1/ObservationExplorations/ObservationExplorations/Assets.xcassets/AppIcon.appiconset/Contents.json b/0252-observation-pt1/ObservationExplorations/ObservationExplorations/Assets.xcassets/AppIcon.appiconset/Contents.json new file mode 100644 index 00000000..13613e3e --- /dev/null +++ b/0252-observation-pt1/ObservationExplorations/ObservationExplorations/Assets.xcassets/AppIcon.appiconset/Contents.json @@ -0,0 +1,13 @@ +{ + "images" : [ + { + "idiom" : "universal", + "platform" : "ios", + "size" : "1024x1024" + } + ], + "info" : { + "author" : "xcode", + "version" : 1 + } +} diff --git a/0252-observation-pt1/ObservationExplorations/ObservationExplorations/Assets.xcassets/Contents.json b/0252-observation-pt1/ObservationExplorations/ObservationExplorations/Assets.xcassets/Contents.json new file mode 100644 index 00000000..73c00596 --- /dev/null +++ b/0252-observation-pt1/ObservationExplorations/ObservationExplorations/Assets.xcassets/Contents.json @@ -0,0 +1,6 @@ +{ + "info" : { + "author" : "xcode", + "version" : 1 + } +} diff --git a/0252-observation-pt1/ObservationExplorations/ObservationExplorations/CounterView.swift b/0252-observation-pt1/ObservationExplorations/ObservationExplorations/CounterView.swift new file mode 100644 index 00000000..30eb600c --- /dev/null +++ b/0252-observation-pt1/ObservationExplorations/ObservationExplorations/CounterView.swift @@ -0,0 +1,74 @@ +import SwiftUI + +class CounterModel: ObservableObject { + @Published var count = 0 + @Published var secondsElapsed = 0 + @Published private var timerTask: Task? + var isTimerOn: Bool { + self.timerTask != nil + } + + func decrementButtonTapped() { + self.count -= 1 + } + func incrementButtonTapped() { + self.count += 1 + } + + func startTimerButtonTapped() { + self.timerTask?.cancel() + self.timerTask = Task { @MainActor in + while true { + try await Task.sleep(for: .seconds(1)) + self.secondsElapsed += 1 + print("secondsElapsed", self.secondsElapsed) + } + } + } + + func stopTimerButtonTapped() { + self.timerTask?.cancel() + self.timerTask = nil + } +} + +struct CounterView: View { + @ObservedObject var model: CounterModel + + var body: some View { + let _ = Self._printChanges() + Form { + Section { + Text(self.model.count.description) + Button("Decrement") { self.model.decrementButtonTapped() } + Button("Increment") { self.model.incrementButtonTapped() } + } header: { + Text("Counter") + } + Section { + //Text("Seconds elapsed: \(self.model.secondsElapsed)") + if !self.model.isTimerOn { + Button("Start timer") { + self.model.startTimerButtonTapped() + } + } else { + Button { + self.model.stopTimerButtonTapped() + } label: { + HStack { + Text("Stop timer") + Spacer() + ProgressView().id(UUID()) + } + } + } + } header: { + Text("Timer") + } + } + } +} + +#Preview { + CounterView(model: CounterModel()) +} diff --git a/0252-observation-pt1/ObservationExplorations/ObservationExplorations/CounterView_State.swift b/0252-observation-pt1/ObservationExplorations/ObservationExplorations/CounterView_State.swift new file mode 100644 index 00000000..8a74d5ad --- /dev/null +++ b/0252-observation-pt1/ObservationExplorations/ObservationExplorations/CounterView_State.swift @@ -0,0 +1,59 @@ +import SwiftUI + +struct CounterView_State: View { + @State var count = 0 + @State var isDisplayingSecondsElapsed = false + @State var secondsElapsed = 0 + @State var timerTask: Task? + + var body: some View { + let _ = Self._printChanges() + Form { + Section { + Text(self.count.description) + Button("Decrement") { self.count -= 1 } + Button("Increment") { self.count += 1 } + } header: { + Text("Counter") + } + Section { + if self.isDisplayingSecondsElapsed { + Text("Seconds elapsed: \(self.secondsElapsed)") + } + if self.timerTask == nil { + Button("Start timer") { + self.secondsElapsed = 0 + self.timerTask?.cancel() + self.timerTask = Task { + while true { + try await Task.sleep(for: .seconds(1)) + print("secondsElapsed", self.secondsElapsed) + self.secondsElapsed += 1 + } + } + } + } else { + Button { + self.timerTask?.cancel() + self.timerTask = nil + } label: { + HStack { + Text("Stop timer") + Spacer() + ProgressView().id(UUID()) + } + } + } + Toggle(isOn: self.$isDisplayingSecondsElapsed) { + Text("Display seconds") + } + } header: { + Text("Timer") + } + } + } +} + +#Preview { + CounterView_State() +} diff --git a/0252-observation-pt1/ObservationExplorations/ObservationExplorations/ObservationExplorationsApp.swift b/0252-observation-pt1/ObservationExplorations/ObservationExplorations/ObservationExplorationsApp.swift new file mode 100644 index 00000000..d11972be --- /dev/null +++ b/0252-observation-pt1/ObservationExplorations/ObservationExplorations/ObservationExplorationsApp.swift @@ -0,0 +1,10 @@ +import SwiftUI + +@main +struct ObservationExplorationsApp: App { + var body: some Scene { + WindowGroup { + CounterView(model: CounterModel()) + } + } +} diff --git a/0252-observation-pt1/ObservationExplorations/ObservationExplorations/Preview Content/Preview Assets.xcassets/Contents.json b/0252-observation-pt1/ObservationExplorations/ObservationExplorations/Preview Content/Preview Assets.xcassets/Contents.json new file mode 100644 index 00000000..73c00596 --- /dev/null +++ b/0252-observation-pt1/ObservationExplorations/ObservationExplorations/Preview Content/Preview Assets.xcassets/Contents.json @@ -0,0 +1,6 @@ +{ + "info" : { + "author" : "xcode", + "version" : 1 + } +} diff --git a/0252-observation-pt1/ObservationExplorations/ObservationExplorationsTests/ObservationExplorations.xctestplan b/0252-observation-pt1/ObservationExplorations/ObservationExplorationsTests/ObservationExplorations.xctestplan new file mode 100644 index 00000000..fb5176aa --- /dev/null +++ b/0252-observation-pt1/ObservationExplorations/ObservationExplorationsTests/ObservationExplorations.xctestplan @@ -0,0 +1,29 @@ +{ + "configurations" : [ + { + "id" : "49AD212A-15DA-46EA-9AD3-B8F6372909AB", + "name" : "Test Scheme Action", + "options" : { + + } + } + ], + "defaultOptions" : { + "targetForVariableExpansion" : { + "containerPath" : "container:ObservationExplorations.xcodeproj", + "identifier" : "2AD14E1B2ACDC3EC0015EB20", + "name" : "ObservationExplorations" + } + }, + "testTargets" : [ + { + "parallelizable" : true, + "target" : { + "containerPath" : "container:ObservationExplorations.xcodeproj", + "identifier" : "2AD14E2B2ACDC3ED0015EB20", + "name" : "ObservationExplorationsTests" + } + } + ], + "version" : 1 +} diff --git a/0252-observation-pt1/ObservationExplorations/ObservationExplorationsTests/ObservationExplorationsTests.swift b/0252-observation-pt1/ObservationExplorations/ObservationExplorationsTests/ObservationExplorationsTests.swift new file mode 100644 index 00000000..0433e7a4 --- /dev/null +++ b/0252-observation-pt1/ObservationExplorations/ObservationExplorationsTests/ObservationExplorationsTests.swift @@ -0,0 +1,36 @@ +// +// ObservationExplorationsTests.swift +// ObservationExplorationsTests +// +// Created by Point-Free on 10/4/23. +// + +import XCTest +@testable import ObservationExplorations + +final class ObservationExplorationsTests: XCTestCase { + + override func setUpWithError() throws { + // Put setup code here. This method is called before the invocation of each test method in the class. + } + + override func tearDownWithError() throws { + // Put teardown code here. This method is called after the invocation of each test method in the class. + } + + func testExample() throws { + // This is an example of a functional test case. + // Use XCTAssert and related functions to verify your tests produce the correct results. + // Any test you write for XCTest can be annotated as throws and async. + // Mark your test throws to produce an unexpected failure when your test encounters an uncaught error. + // Mark your test async to allow awaiting for asynchronous code to complete. Check the results with assertions afterwards. + } + + func testPerformanceExample() throws { + // This is an example of a performance test case. + self.measure { + // Put the code you want to measure the time of here. + } + } + +} diff --git a/0252-observation-pt1/README.md b/0252-observation-pt1/README.md new file mode 100644 index 00000000..6f64c549 --- /dev/null +++ b/0252-observation-pt1/README.md @@ -0,0 +1,5 @@ +## [Point-Free](https://www.pointfree.co) + +> #### This directory contains code from Point-Free Episode: [Observation: The Past](https://www.pointfree.co/episodes/ep252-observation-the-past) +> +> It’s time to dive deep into Swift’s new observation tools. But to start we will take a look at the tools SwiftUI historically provided, including the `@State` and `@ObservedObject` property wrappers, how they behave and where they fall short, so that we can compare them to the new `@Observable` macro. diff --git a/README.md b/README.md index 3847c190..60567a59 100644 --- a/README.md +++ b/README.md @@ -253,3 +253,4 @@ This repository is the home of code written on episodes of [Point-Free](https:// 1. [Tour of the Composable Architecture 1.0: Persistence](0249-tca-tour-pt7) 1. [Testing & Debugging Macros: Part 1](0250-macro-testing-pt1) 1. [Testing & Debugging Macros: Part 2](0251-macro-testing-pt2) +1. [Observation: The Past](0252-observation-pt2)