@Environment(\.keyPath)那么好我不允许你们不知道！ / atEnvironment keyPath is so good and you should know it!

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1. !&OWJSPONFOU =LFZ1BUI ପહݺ ໡҂ᄍྸ୆ૌ҂ᆩ֡Ć f o r
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2. } var employedBy = "YUMEMI Inc." var job = "iOS Developer" var organizerOf = "HAKATA.swift" var favoriteLanguage = "Swift" var twitter = "@lovee" var qiita = "lovee" var github = "el-hoshino" var additionalInfo = """ ߎી༝ܸ෻ຖݓეđၛᇀႿᄝੌ༯֥FamilyMart୤ޱࣕग़ “౨໙গčlaʣ䭓ʢjiʣԳࡏ䬟ཬ” """ final class Me: Developable, Talkable {
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6. !&OWJSPONFOU aLFZ1BUI
7. ࢺക၂ུ໡หљམေԮ֥࢝
   !&OWJSPONFOU =LFZ1BUI ֥หׄ
8. extension EnvironmentValues { @Entry var count: Int = 0 } struct CountView: View { @Environment(\.count) var count var body: some View { Text("Count: \(count)") } } struct ContentView: View { @State private var count = 0 var body: some View { VStack { CountView() // ... } .environment(\.count, count) } } ࠎԤႨم
9. extension EnvironmentValues { @Entry var count: Int = 0 } struct CountView: View { @Environment(\.count) var count var hash: Int { count.hashValue } var body: some View { Text("Count: \(hash)") } } struct ContentView: View { @State private var count = 0 var body: some View { VStack { CountView() // ... } .environment(\.count, count) } } ,FZ1BUI৵ࢲ 🤔
10. extension EnvironmentValues { @Entry var count: Int = 0 } struct CountView: View { @Environment(\.count.hashValue) var hash var body: some View { Text("Count: \(hash)") } } struct ContentView: View { @State private var count = 0 var body: some View { VStack { CountView() // ... } .environment(\.count, count) } } ,FZ1BUI৵ࢲ
11. extension EnvironmentValues { @Entry var count: Int = 0 } struct CountView: View { @Environment(\.count) var count var body: some View { VStack { // ... Button("Increment") { count += 1 } } } } struct ContentView: View { @State private var count = 0 var body: some View { CountView() .environment(\.count, count) } } սೆԩ৘ 🙅
12. extension EnvironmentValues { @Entry var _count: Binding<Int> = .constant(0) var count: Int { _count.wrappedValue } } struct CountView: View { @Environment(\.count) var count var body: some View { VStack { // ... Button("Increment") { _count.wrappedValue += 1 } } } } struct ContentView: View { @State private var count = 0 var body: some View { CountView() .environment(\._count, $count) } } սೆԩ৘ 🤔
13. extension EnvironmentValues { @Entry var _count: Binding<Int> = .constant(0) var count: Int { _count.wrappedValue } } struct CountUpAction { fileprivate var action: () -> Void func callAsFunction() { action() } } extension EnvironmentValues { var countUp: CountUpAction { .init { _count.wrappedValue += 1 } } } struct CountView: View { @Environment(\.count) var count @Environment(\.countUp) var countUp var body: some View { VStack { // ... Button("Increment") { countUp() } } } } struct ContentView: View { @State private var count = 0 var body: some View { CountView() .environment(\._count, $count) } } սೆԩ৘
14. struct CountUpAction { fileprivate var action: () -> Void func callAsFunction() { action() } } extension EnvironmentValues { var countUp: CountUpAction { .init { _count.wrappedValue += 1 } } } struct CountView: View { // ... @Environment(\.countUp) var countUp var body: some View { VStack { Text("Count: \(count)") .foregroundStyle(color.title) Button("Increment") { countUp() } } } } #Preview { @Previewable @State var previewCount: Int = 0 CountView() .environment(\._count, $previewCount) .environment(\.countUp, .init(action: { /* ... */ })) } 🙅 ᇿೆીႵ4FUUFS֥&OW
15. struct CountUpAction { fileprivate var action: () -> Void func callAsFunction() { action() } } extension EnvironmentValues { var countUp: CountUpAction { .init { _count.wrappedValue += 1 } } } struct CountView: View { // ... @Environment(\.countUp) var countUp var body: some View { // ... } } private extension EnvironmentValues { var previewAction: CountUpAction { .init { print("Preview Count Up!") _count.wrappedValue += 100 } } } #Preview { @Previewable @State var previewCount: Int = 0 CountView(countUp: .init(\.previewAction)) .environment(\._count, $previewCount) } ᇿೆીႵ4FUUFS֥&OW