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!&OWJSPONFOU =LFZ1BUI
ପહݺ
҂ᄍྸૌ҂ᆩ֡Ć
f o r J 1M BZ H S P V OE -5
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}
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༝ܸຖݓეđၛᇀႿᄝੌ༯֥FamilyMartޱࣕग़
“౨໙গčlaʣ䭓ʢjiʣԳࡏ䬟ཬ”
"""
final class Me: Developable, Talkable {
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ી
ી
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!&OWJSPONFOU aLFZ1BUI
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ࢺക၂ུหљམေԮ֥࢝
!&OWJSPONFOU =LFZ1BUI
֥หׄ
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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
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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
🤔
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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
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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
🙅
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extension EnvironmentValues {
@Entry var _count: Binding
= .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
🤔
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extension EnvironmentValues {
@Entry var _count: Binding = .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
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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
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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
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