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!@LJ
BWBJMBCMFͱEFQSFDBUFEΛͬͯ
ޮత͔ͭ҆શʹ
ϦϑΝΫλϦϯάΛਐΊΔ
QPUBUPUJQT
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"CPVUNF
struct Me {
let name = "Takuhiro Muta"
let aka = "417.72KI"
let company = "(redacted)"
let twitter = "417_72ki"
let qiita = "417_72ki"
let gitHub = "417-72KI"
let products = [
"MockUserDefaults",
"MultipartFormDataParser",
"BuildConfig.swift",
"SSGH"
]
let contributing = [
"Danger-Swift",
"octokit.swift",
"etc..."
]
}
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طଘίʔυʹUZQPΛݟ͚ͭͨΒ
Ͳ͏͠·͔͢ʁ
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w मਖ਼͢Δ
w ݟͳ͔ͬͨ͜ͱʹ͢Δ
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w मਖ਼͢Δ
w 3FGBDUPS3FOBNF
w 'JOEBOE3FQMBDFJO1BDLBHF
w ݟͳ͔ͬͨ͜ͱʹ͢Δ
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w मਖ਼͢Δ
w 3FGBDUPS3FOBNF
w 'JOEBOE3FQMBDFJO1BDLBHF
w ݟͳ͔ͬͨ͜ͱʹ͢Δ
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3FGBDUPS3FOBNF
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😩
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w मਖ਼͢Δ
w 3FGBDUPS3FOBNF
w 'JOEBOE3FQMBDFJO1BDLBHF
w ݟͳ͔ͬͨ͜ͱʹ͢Δ
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'JOEBOE3FQMBDFJO1BDLBHF
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'JOEBOE3FQMBDFJO1BDLBHF
w Ұݟྑͦ͞͏ʹݟ͑Δ͕
w ͤʔͷͰҰ੪ʹॻ͖ΘΔ
w ཏੑେৎʁ
w ֘GVODUJPOҎ֎ʹಉ͡UZQP͕͋ͬͨ࣌ͦͬͪมΘΔ
w ςετ͖͠ΕΔʁ
w UZQPΛमਖ਼ͨ݁͠ՌผͷGVODUJPOͱඃͬͨ
w ҙਤͤ͵όάͷੜ
🤔
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'JOEBOE3FQMBDFJO1BDLBHF
// A.swift
func doSomesing() {
// do something
}
// C.swift
func doSomething(with foo: Foo = .init()) {
// do something with `foo`
}
// B.swift
func call() {
doSomesing()
}
// D.swift
func callWithFoo() {
doSomething()
}
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'JOEBOE3FQMBDFJO1BDLBHF
// A.swift
func doSomething() {
// do something
}
// C.swift
func doSomething(with foo: Foo = .init()) {
// do something with `foo`
}
// B.swift
func call() {
doSomething()
}
// D.swift
func callWithFoo() {
doSomething()
}
😱
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w मਖ਼͢Δ
w 3FGBDUPS3FOBNF
w 'JOEBOE3FQMBDFJO1BDLBHF
w ݟͳ͔ͬͨ͜ͱʹ͢Δ
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w मਖ਼͢Δ
w 3FGBDUPS3FOBNF
w 'JOEBOE3FQMBDFJO1BDLBHF
w 6TFABWBJMBCMFABOEAEFQSFDBUFEA
w ݟͳ͔ͬͨ͜ͱʹ͢Δ
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BWBJMBCMFʹ͍ͭͯ
BWBJMBCMFͱ
w ʮಛఆͷ04όʔδϣϯ͔Β͑Δ͑ͳ͘ͳΔʯͱ͍ͬͨใΛऔΓѻ͏
BUUSJCVUF
w Ϗϧυ࣌ʹܯࠂΤϥʔͷܗͰϑΟʔυόοΫͯ͘͠ΕΔ
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BWBJMBCMFʹ͍ͭͯ
ओͳΦϓγϣϯ
w ܯࠂ
w EFQSFDBUFEඇਪ όʔδϣϯলུՄ
w ϏϧυΤϥʔ
w PCTPMFUFEഇࢭ όʔδϣϯলུෆՄ
w VOBWBJMBCMFར༻ෆՄ όʔδϣϯࢦఆෆՄ
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BWBJMBCMFʹ͍ͭͯ
ओͳΦϓγϣϯ
w ͦͷଞ
w SFOBNFEϦωʔϜઌͷ"1*GVODUJPO໊
ࢦఆ͢Δͱ9DPEF্ͰαδΣετΑ͠ͳʹஔͯ͘͠ΕΔ
w NFTTBHFܯࠂΤϥʔϝοηʔδ
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BWBJMBCMFEFQSFDBUFEΛͬͯUZQPΛमਖ਼
ϝϦοτ
w ཁमਖ਼ՕॴͷಛఆΛίϯύΠϥʹؙ͛Ͱ͖Δ
w શ෦ม͑Δඞཁ͕ແ͍ͷͰஈ֊తʹϦϑΝΫλϦϯάΛਐΊΒΕΔ
w FYվमରʹͳͬͨΒରԠ͢Δ
w FYςετίʔυͷ͋Δݺͼग़͠ݩ͔ΒରԠ͍ͯ͘͠
w ӨڹൣғΛ࠷খݶʹ͑ΒΕΔ
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BWBJMBCMFEFQSFDBUFEΛͬͯUZQPΛमਖ਼
σϝϦοτ
w Өڹൣғ͕ଟ͚Εଟ͍΄Ͳܯࠂ͕૿͑Δ
w ಉ͡༰ͷܯࠂ͕ζϥοͱฒͿ
w $*ͷग़ྗΛπʔϧͰऔͬͯͨΓ͍ͯ͠Δͱπϥ͍͔
w SFOBNFEͰͷࣗಈมҰׅͰͰ͖ͳ͍
w ·ͱΊͯΖ͏ͱ͢Δͱෆศ
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func doSomesing() {
// do something
}
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func doSomesing() {
doSomething()
}
func doSomething() {
// do something
}
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@available(*, deprecated, renamed: "doSomething()")
func doSomesing() {
doSomething()
}
func doSomething() {
// do something
}
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No content
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No content
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No content
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Ԡ༻ฤ
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αϙʔτόʔδϣϯͷؔͰ
͑ͳ͍"1*Λ͍͍ͨ
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αϙʔτόʔδϣϯͷؔͰ͑ͳ͍"1*
˞J04ͷ"QQΛఆ
w JGBWBJMBCMFΛͬͯ
w 8PSLBSPVOEͱซ༻͢Δ
w ্ҐόʔδϣϯͷΈ͑ΔΑ͏ʹ͢Δ
w FY
w "UUSJCVUFE4USJOH J04d
w QSFTFOUBUJPO%FUFOUT J04d
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αϙʔτόʔδϣϯͷؔͰ͑ͳ͍"1*
˞J04ͷ"QQΛఆ
w JGBWBJMBCMFΛͬͯ
w 8PSLBSPVOEͱซ༻͢Δ
w ্ҐόʔδϣϯͷΈ͑ΔΑ͏ʹ͢Δ
w FY
w "UUSJCVUFE4USJOH J04d
w QSFTFOUBUJPO%FUFOUT J04d
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"UUSJCVUFE4USJOH
var attributedString: AttributedString { // ← 'AttributedString' is
only available in iOS 15 or newer
var str = AttributedString("Foo Bar Baz Qux Quux")
if let range = str.range(of: "Bar") {
str[range].foregroundColor = .red
}
if let range = str.range(of: "Baz") {
str[range].font = .title
}
if let range = str.range(of: "Qux") {
str[range].font = .footnote
str[range].foregroundColor = .green
}
return str
}
var body: some View {
VStack {
Text(attributedString) // ← 'init(_:)'
is only available in iOS 15.0 or newer
}
}
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"UUSJCVUFE4USJOH
@available(iOS 15, *)
var attributedString: AttributedString {
var str = AttributedString("Foo Bar Baz Qux Quux")
if let range = str.range(of: "Bar") {
str[range].foregroundColor = .red
}
if let range = str.range(of: "Baz") {
str[range].font = .title
}
if let range = str.range(of: "Qux") {
str[range].font = .footnote
str[range].foregroundColor = .green
}
return str
}
var body: some View {
VStack {
Text(attributedString) // ← 'init(_:)'
is only available in iOS 15.0 or newer
}
}
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"UUSJCVUFE4USJOH
var body: some View {
VStack {
if #available(iOS 15, *) {
Text(attributedString)
} else {
Text("Foo")
+ Text(" ")
+ Text("Bar")
.foregroundColor(.red)
+ Text(" ")
+ Text("Baz")
.font(.title)
+ Text(" ")
+ Text("Qux")
.font(.footnote)
.foregroundColor(.green)
+ Text(" ")
+ Text("Quux")
}
}
}
@available(iOS 15, *)
var attributedString: AttributedString {
var str = AttributedString("Foo Bar Baz Qux Quux")
if let range = str.range(of: "Bar") {
str[range].foregroundColor = .red
}
if let range = str.range(of: "Baz") {
str[range].font = .title
}
if let range = str.range(of: "Qux") {
str[range].font = .footnote
str[range].foregroundColor = .green
}
return str
}
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"UUSJCVUFE4USJOH
var body: some View {
VStack {
if #available(iOS 15, *) {
Text(attributedString)
} else {
AttributedText {
Text("Foo")
Text(" ")
Text("Bar")
.foregroundColor(.red)
Text(" ")
Text("Baz")
.font(.title)
Text(" ")
Text("Qux")
.font(.footnote)
.foregroundColor(.green)
Text(" ")
Text("Quux")
}
}
}
}
struct AttributedText: View {
typealias Body = Text
var text: Text
init(@Builder builder: () -> Text) {
text = builder()
}
var body: Text {
text
}
}
extension AttributedText {
@resultBuilder
enum Builder { ɾɾɾ }
}
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JGBWBJMBCMFͷपғޙʹ
ٕज़తෛ࠴ʹͳΔ͜ͱ͕֬ఆ͍ͯ͠Δ
🤔
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Ͱޙʹ֮͑ͯΔอূແ͍
😅
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"UUSJCVUFE4USJOH
ଋ͞Εٕͨज़తෛ࠴Λ·Ͱ͓֮͑ͯͨ͘Ίʹ
var body: some View {
VStack {
AttributedText {
Text("Foo")
Text(" ")
Text("Bar")
.foregroundColor(.red)
Text(" ")
Text("Baz")
.font(.title)
Text(" ")
Text("Qux")
.font(.footnote)
.foregroundColor(.green)
Text(" ")
Text("Quux")
}
}
}
struct AttributedText: View {
typealias Body = Text
var text: Text
init(@Builder builder: () -> Text) {
text = builder()
}
var body: Text {
text
}
}
extension AttributedText {
@resultBuilder
enum Builder { ɾɾɾ }
}
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"UUSJCVUFE4USJOH
.JOJNVN%FQMPZNFOU5BSHFU͕ҎԼͷؒܯࠂ͕ग़ͳ͍
@available(iOS, deprecated: 15.0, obsoleted: 16.0,
message: "Use `Text` with `AttributedString`")
struct AttributedText: View {
typealias Body = Text
var text: Text
init(@Builder builder: () -> Text) {
text = builder()
}
var body: Text {
text
}
}
@available(iOS, deprecated: 15.0, obsoleted: 16.0,
message: "Use `Text` with `AttributedString`")
extension AttributedText {
@resultBuilder
enum Builder { ɾɾɾ }
}
var body: some View {
VStack {
AttributedText {
Text("Foo")
Text(" ")
Text("Bar")
.foregroundColor(.red)
Text(" ")
Text("Baz")
.font(.title)
Text(" ")
Text("Qux")
.font(.footnote)
.foregroundColor(.green)
Text(" ")
Text("Quux")
}
}
}
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"UUSJCVUFE4USJOH
.JOJNVN%FQMPZNFOU5BSHFUΛʹͨ͠Βܯࠂ͕ग़Δ
@available(iOS, deprecated: 15.0, obsoleted: 16.0,
message: "Use `Text` with `AttributedString`")
struct AttributedText: View {
typealias Body = Text
var text: Text
init(@Builder builder: () -> Text) {
text = builder()
}
var body: Text {
text
}
}
@available(iOS, deprecated: 15.0, obsoleted: 16.0,
message: "Use `Text` with `AttributedString`")
extension AttributedText {
@resultBuilder
enum Builder { ɾɾɾ }
}
var body: some View {
VStack {
AttributedText { // ←
'AttributedText' was deprecated in iOS
15.0: Use `Text` with `AttributedString`
Text("Foo")
Text(" ")
Text("Bar")
.foregroundColor(.red)
Text(" ")
Text("Baz")
.font(.title)
Text(" ")
Text("Qux")
.font(.footnote)
.foregroundColor(.green)
Text(" ")
Text("Quux")
}
}
}
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"UUSJCVUFE4USJOH
.JOJNVN%FQMPZNFOU5BSHFUΛʹͨ͠ΒϏϧυΤϥʔʹ
@available(iOS, deprecated: 15.0, obsoleted: 16.0,
message: "Use `Text` with `AttributedString`")
struct AttributedText: View {
typealias Body = Text
var text: Text
init(@Builder builder: () -> Text) {
text = builder()
}
var body: Text {
text
}
}
@available(iOS, deprecated: 15.0, obsoleted: 16.0,
message: "Use `Text` with `AttributedString`")
extension AttributedText {
@resultBuilder
enum Builder { ɾɾɾ }
}
var body: some View {
VStack {
AttributedText { // ←
'AttributedText' is unavailable in iOS:
Use `Text` with `AttributedString`
Text("Foo")
Text(" ")
Text("Bar")
.foregroundColor(.red)
Text(" ")
Text("Baz")
.font(.title)
Text(" ")
Text("Qux")
.font(.footnote)
.foregroundColor(.green)
Text(" ")
Text("Quux")
}
}
}
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"UUSJCVUFE4USJOH
JGBWBJMBCMF
\^FMTF\^ͰׅΒΕΔͱܯࠂ͕ग़ͳ͍
var body: some View {
VStack {
if #available(iOS 15, *) {
Text(attributedString)
} else {
AttributedText {
Text("Foo")
Text(" ")
Text("Bar")
.foregroundColor(.red)
Text(" ")
Text("Baz")
.font(.title)
Text(" ")
Text("Qux")
.font(.footnote)
.foregroundColor(.green)
Text(" ")
Text("Quux")
}
}
}
}
@available(iOS, deprecated: 15.0, obsoleted: 16.0,
message: "Use `Text` with `AttributedString`")
struct AttributedText: View {
typealias Body = Text
var text: Text
init(@Builder builder: () -> Text) {
text = builder()
}
var body: Text {
text
}
}
@available(iOS, deprecated: 15.0, obsoleted: 16.0,
message: "Use `Text` with `AttributedString`")
extension AttributedText {
@resultBuilder
enum Builder { ɾɾɾ }
}
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var body: some View {
VStack {
if #available(iOS 15, *) {
Text(attributedString)
} else {
AttributedText { // ←
'AttributedText' is unavailable in iOS: Use
`Text` with `AttributedString`
Text("Foo")
Text(" ")
Text("Bar")
.foregroundColor(.red)
Text(" ")
Text("Baz")
.font(.title)
Text(" ")
Text("Qux")
.font(.footnote)
.foregroundColor(.green)
Text(" ")
Text("Quux")
}
}
}
}
"UUSJCVUFE4USJOH
PCTPMFUFEʹ͢ΔͱΤϥʔʹͳΔ
@available(iOS, obsoleted: 15.0,
message: "Use `Text` with `AttributedString`")
struct AttributedText: View {
typealias Body = Text
var text: Text
init(@Builder builder: () -> Text) {
text = builder()
}
var body: Text {
text
}
}
@available(iOS, obsoleted: 15.0,
message: "Use `Text` with `AttributedString`")
extension AttributedText {
@resultBuilder
enum Builder { ɾɾɾ }
}
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αϙʔτόʔδϣϯͷؔͰ͑ͳ͍"1*
˞J04ͷ"QQΛఆ
w JGBWBJMBCMFΛͬͯ
w 8PSLBSPVOEͱซ༻͢Δ
w ্ҐόʔδϣϯͷΈ͑ΔΑ͏ʹ͢Δ
w FY
w "UUSJCVUFE4USJOH J04d
w QSFTFOUBUJPO%FUFOUT J04d
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QSFTFOUBUJPO%FUFOUT
struct ContentView: View {
@State private var isPresenting = false
var body: some View {
VStack {
Button {
isPresenting = true
} label: {
VStack {
Image(systemName: "globe")
.imageScale(.large)
Text("Hello, world!")
}.foregroundColor(.accentColor)
.padding()
}
.sheet(isPresented: $isPresenting) {
SheetView()
.presentationDetents([.medium]) // ← 'presentationDetents' is only available in iOS 16.0 or newer
}
}
}
}
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QSFTFOUBUJPO%FUFOUT
struct ContentView: View {
@State private var isPresenting = false
var body: some View {
VStack {
Button {
isPresenting = true
} label: {
VStack {
Image(systemName: "globe")
.imageScale(.large)
Text("Hello, world!")
}.foregroundColor(.accentColor)
.padding()
}
.sheet(isPresented: $isPresenting) {
if #available(iOS 16.0, *) {
SheetView()
.presentationDetents([.medium])
} else {
SheetView()
}
}
}
}
}
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QSFTFOUBUJPO%FUFOUT
GVODUJPOʹΓग़͢
extension View {
@ViewBuilder
func halfSheetIfAble(height: CGFloat? = nil) -> some View {
if #available(iOS 16.0, *) {
if let height {
presentationDetents([.height(height)])
} else {
presentationDetents([.medium])
}
} else {
self
}
}
}
struct ContentView: View {
@State private var isPresenting = false
var body: some View {
VStack {
Button {
isPresenting = true
} label: {
VStack {
Image(systemName: "globe")
.imageScale(.large)
Text("Hello, world!")
}.foregroundColor(.accentColor)
.padding()
}
.sheet(isPresented: $isPresenting) {
SheetView()
.halfSheetIfAble()
}
}
}
}
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QSFTFOUBUJPO%FUFOUT
struct ContentView: View {
@State private var isPresenting = false
var body: some View {
VStack {
Button {
isPresenting = true
} label: {
VStack {
Image(systemName: "globe")
.imageScale(.large)
Text("Hello, world!")
}.foregroundColor(.accentColor)
.padding()
}
.sheet(isPresented: $isPresenting) {
SheetView()
.halfSheetIfAble()
}
}
}
}
@available(iOS, deprecated: 16, message: "Use
`presentationDetents` directly.")
extension View {
@ViewBuilder
func halfSheetIfAble(height: CGFloat? = nil) -> some View {
if #available(iOS 16.0, *) {
if let height {
presentationDetents([.height(height)])
} else {
presentationDetents([.medium])
}
} else {
self
}
}
}
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QSFTFOUBUJPO%FUFOUT
.JOJNVN%FQMPZNFOU5BSHFUΛʹ͢Δͱܯࠂ͕ग़Δ
struct ContentView: View {
@State private var isPresenting = false
var body: some View {
VStack {
Button {
isPresenting = true
} label: {
VStack {
Image(systemName: "globe")
.imageScale(.large)
Text("Hello, world!")
}.foregroundColor(.accentColor)
.padding()
}
.sheet(isPresented: $isPresenting) {
SheetView()
.halfSheetIfAble() // ←
'halfSheetIfAble(height:)' was deprecated in iOS
16: Use `presentationDetents` directly.
}
}
}
}
@available(iOS, deprecated: 16, message: "Use
`presentationDetents` directly.")
extension View {
@ViewBuilder
func halfSheetIfAble(height: CGFloat? = nil) -> some View {
if #available(iOS 16.0, *) {
if let height {
presentationDetents([.height(height)])
} else {
presentationDetents([.medium])
}
} else {
self
}
}
}
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QSFTFOUBUJPO%FUFOUT
ผղಉ໊ͷCBDLQPSUGVODUJPOΛ༻ҙ͢Δ
struct ContentView: View {
@State private var isPresenting = false
var body: some View {
VStack {
Button {
isPresenting = true
} label: {
VStack {
Image(systemName: "globe")
.imageScale(.large)
Text("Hello, world!")
}.foregroundColor(.accentColor)
.padding()
}
.sheet(isPresented: $isPresenting) {
SheetView()
.presentationDetents([.medium])
}
}
}
}
@available(iOS, obsoleted: 16, message: "Use `presentationDetents` in SwiftUI
directly.")
extension View {
@ViewBuilder
func presentationDetents(_ detents: Set) -> some View {
if #available(iOS 16.0, *) {
presentationDetents(Set(detents.map(\.detent)))
} else {
self
}
}
}
/// Backporting for `SwiftUI.PresentationDetent`
enum PresentationDetent: Hashable {
ɾɾɾ
}
@available(iOS 16.0, *)
extension PresentationDetent {
var detent: SwiftUI.PresentationDetent {
switch self {
case .medium: return .medium
ɾɾɾ
}
}
}
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QSFTFOUBUJPO%FUFOUT
.JOJNVN%FQMPZNFOU5BSHFUΛʹ͢ΔͱϏϧυΤϥʔ
struct ContentView: View {
@State private var isPresenting = false
var body: some View {
VStack {
Button {
isPresenting = true
} label: {
VStack {
Image(systemName: "globe")
.imageScale(.large)
Text("Hello, world!")
}.foregroundColor(.accentColor)
.padding()
}
.sheet(isPresented: $isPresenting) {
SheetView()
.presentationDetents([.medium]) /
/ ← Ambiguous use of 'medium'
}
}
}
}
@available(iOS, deprecated: 16, message: "Use `presentationDetents` in SwiftUI
directly.")
extension View {
@ViewBuilder
func presentationDetents(_ detents: Set) -> some View {
if #available(iOS 16.0, *) {
presentationDetents(Set(detents.map(\.detent)))
} else {
self
}
}
}
/// Backporting for `SwiftUI.PresentationDetent`
enum PresentationDetent: Hashable {
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}
@available(iOS 16.0, *)
extension PresentationDetent {
var detent: SwiftUI.PresentationDetent {
switch self {
case .medium: return .medium
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}
}
}
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struct ContentView: View {
@State private var isPresenting = false
var body: some View {
VStack {
Button {
isPresenting = true
} label: {
VStack {
Image(systemName: "globe")
.imageScale(.large)
Text("Hello, world!")
}.foregroundColor(.accentColor)
.padding()
}
.sheet(isPresented: $isPresenting) {
SheetView()
.presentationDetents([.medium])
}
}
}
}
//@available(iOS, obsoleted: 16, message: "Use `presentationDetents` in SwiftUI
directly.")
//extension View {
// @ViewBuilder
// func presentationDetents(_ detents: Set) -> some View {
// if #available(iOS 16.0, *) {
// presentationDetents(Set(detents.map(\.detent)))
// } else {
// self
// }
// }
//}
//
///// Backporting for `SwiftUI.PresentationDetent`
//enum PresentationDetent: Hashable {
// ɾɾɾ
//}
//
//@available(iOS 16.0, *)
//extension PresentationDetent {
// var detent: SwiftUI.PresentationDetent {
// switch self {
// case .medium: return .medium
// ɾɾɾ
// }
// }
//}
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