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Struct ͱ Class ͷ͍͚ํ
ࠓߋฉ͚ͳ͍ʁ
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Who am I?
MAGES. Inc. Game Div. (5pb.Games)
iOS Developer
@loveeʢܙྤʣ
ͷΞγελϯτP←!!!!
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class
struct vs
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struct class
ܕ ܕ ࢀরܕ
ܧঝ ෆՄ Մೳ
deinit ͳ͠ ͋Γ
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struct class
ܕ ܕ ࢀরܕ
ܧঝ ෆՄ Մೳ
deinit ͳ͠ ͋Γ
๏ ੜίετ͍
๏ ॥ࢀর͕ͳ͍
๏ εϨουηʔϑ
๏ ॲཧ͕୯७Ͱ͔Γ͍͢
๏ etc…
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͏શ෦ struct ͓͏ͥʂ
ʢUIView ͱ͔͔Βܧঝ͢ΔͷҎ֎ʣ
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struct Player {
let name: String // ໊લɺมߋෆՄ
var level = 1
// ͦͷଞॾʑ
init(name: String) {
self.name = name
}
mutating func levelUp() {
level += 1
}
}
var player = Player(name: "ྋ෩੨༿") {
didSet {
// ηʔϒσʔλ
}
}
player.levelUp() // didSet ͕ݺΕͯϢʔβσʔλ͕ηʔϒ͞ΕΔ
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struct Player {
let name: String // ໊લɺมߋෆՄ
var level = 1
// ͦͷଞॾʑ
init(name: String) {
self.name = name
}
mutating func levelUp() {
level += 1
}
}
var player = Player(name: "ྋ෩੨༿") {
didSet {
// ηʔϒσʔλ
}
}
player.levelUp() // didSet ͕ݺΕͯϢʔβσʔλ͕ηʔϒ͞ΕΔ
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struct Player {
let name: String // ໊લɺมߋෆՄ
var level = 1
// ͦͷଞॾʑ
init(name: String) {
self.name = name
}
mutating func levelUp() {
level += 1
}
}
var player = Player(name: "ྋ෩੨༿") {
didSet {
// ηʔϒσʔλ
}
}
player.levelUp() // didSet ͕ݺΕͯϢʔβσʔλ͕ηʔϒ͞ΕΔ
player = Player(name: "ࡩͶͶ") // ϩδοΫΤϥʔɿఆͰ͋Δ player.name ͕มΘͬͯ͠·͏
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struct Player {
let name: String // ໊લɺมߋෆՄ
var level = 1
// ͦͷଞॾʑ
init(name: String) {
self.name = name
}
mutating func levelUp() {
level += 1
}
}
var player = Player(name: "ྋ෩੨༿") {
didSet {
// ηʔϒσʔλ
}
}
player.levelUp() // didSet ͕ݺΕͯϢʔβσʔλ͕ηʔϒ͞ΕΔ
player = Player(name: "ࡩͶͶ") // ϩδοΫΤϥʔɿఆͰ͋Δ player.name ͕มΘͬͯ͠·͏
㨍㩆㏔׳⑉㌈ר挵㓱ש؆קŎ
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Γ struct ͱ class
ͪΌΜͱ͍͚·͠ΐ͏
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switch instance {
case is Data:
useStruct()
case is Object:
useClass()
case _:
fatalError("ͪΌΜͱߟ͑Ζʂ")
}
嗒嵿䥥鰛㏰❔鰘鰟
&CVC鰙1DLGEV鰑鰹
鱣鱈鱻痓鰉鰴鰛鯵鰹
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true false
ೖ࣌ʹσʔλͷίϐʔͱͯ͠
ೖ͞ΕΔͷ͕͓͔͍͠
class struct
ಉҰൺֱʢ===ʣʹҙຯ͕͋Δ
ʮϥΠϑαΠΫϧʯ͕ߟ͑ΒΕ
Δ
நతͳʮຊମʯ͕ߟ͑ΒΕΔ
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protocol LoverBecomable { }
struct Human {
var name: String
var item: String?
var lover: LoverBecomable?
init(name: String) {
self.name = name
}
}
extension Human: LoverBecomable { }
var ktanaka = Human(name: "ాதݡ࣏")
var maki = Human(name: "ਅඣ")
ktanaka.lover = maki
maki.item = "Bikini"
(ktanaka.lover as? Human)?.item // nil
ktanaka.lover === maki // Error: Binary operator '===' cannot be applied
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protocol LoverBecomable { }
struct Human {
var name: String
var item: String?
var lover: LoverBecomable?
init(name: String) {
self.name = name
}
}
extension Human: LoverBecomable { }
var ktanaka = Human(name: "ాதݡ࣏")
var maki = Human(name: "ਅඣ")
ktanaka.lover = maki
maki.item = "Bikini"
(ktanaka.lover as? Human)?.item // nil
ktanaka.lover === maki // Error: Binary operator '===' cannot be applied
㌬↛؋
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protocol LoverBecomable { }
struct Human {
var name: String
var item: String?
var lover: LoverBecomable?
init(name: String) {
self.name = name
}
}
extension Human: LoverBecomable { }
var ktanaka = Human(name: "ాதݡ࣏")
var maki = Human(name: "ਅඣ")
ktanaka.lover = maki
maki.item = "Bikini"
(ktanaka.lover as? Human)?.item // nil
ktanaka.lover === maki // Error: Binary operator '===' cannot be applied
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true false
ೖ࣌ʹσʔλͷίϐʔͱͯ͠
ೖ͞ΕΔͷ͕͓͔͍͠
class struct
ಉҰൺֱʢ===ʣʹҙຯ͕͋Δ
ʮϥΠϑαΠΫϧʯ͕ߟ͑ΒΕ
Δ
நతͳʮຊମʯ͕ߟ͑ΒΕΔ
"
"
"
"
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protocol LoverBecomable { }
struct Human {
var name: String
var item: String?
var lover: LoverBecomable?
init(name: String) {
self.name = name
}
}
extension Human: LoverBecomable { }
var ktanaka = Human(name: "ాதݡ࣏")
var maki = Human(name: "ਅඣ")
ktanaka.lover = maki
maki.item = "Bikini"
(ktanaka.lover as? Human)?.item // nil
ktanaka.lover === maki // Error: Binary operator '===' cannot be applied
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protocol LoverBecomable: class { }
class Human {
var name: String
var item: String?
weak var lover: LoverBecomable?
init(name: String) {
self.name = name
}
}
extension Human: LoverBecomable { }
let ktanaka = Human(name: "ాதݡ࣏")
let maki = Human(name: "ਅඣ")
ktanaka.lover = maki
maki.item = "Bikini"
(ktanaka.lover as? Human)?.item // Bikini
ktanaka.lover === maki // true
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class Human {
// …
var bankAccounts: [BankAccount]
// …
}
protocol BankAccountDelegate: class {
func account(_ account: BankAccount, changePasswordTo newPassword: String) throws -> Int
func account(_ account: BankAccount, transfer amount: Int, to receiver: Int) throws
}
class BankAccount {
let id: Int
private(set) var hashedPassword: Int
private(set) weak var delegate: BankAccountDelegate?
// init(id: Int, encryptedPassword: Int, delegate: BankAccountDelegate) { … }
func changePassword(to newPassword: String) {
do {
guard let delegate = self.delegate else { throw NSError() }
let newHashedPassword = try delegate.account(self, changePasswordTo: newPassword)
self.hashedPassword = newHashedPassword
print("ύεϫʔυมߋޭ")
} catch {
print("ύεϫʔυมߋࣦഊ")
}
}
func transfer(_ amount: Int, to receiver: Int) {
do {
guard let delegate = self.delegate else { throw NSError() }
try delegate.account(self, transfer: amount, to: receiver)
print("ૹۚޭ")
} catch {
print("ૹࣦۚഊ")
}
}
}
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class Human {
// …
var bankAccounts: [BankAccount]
// …
}
protocol BankAccountDelegate: class {
func account(_ account: BankAccount, changePasswordTo newPassword: String) throws -> Int
func account(_ account: BankAccount, transfer amount: Int, to receiver: Int) throws
}
class BankAccount {
// …
func changePassword(to newPassword: String) {
// …
}
func transfer(_ amount: Int, to receiver: Int) {
do {
guard let delegate = self.delegate else { throw NSError() }
try delegate.account(self, transfor: amount, to: receiver)
print("ૹۚޭ")
} catch {
print("ૹࣦۚഊ")
}
}
}
let tanakaAccount = someBank.issueAccount(password: "1234")
ktanaka.bankAccounts.append(tanakaAccount)
let amazonAccountID = someBank.issueAccount(password: "J7BJuGy8ks2T").id
ktanaka.bankAccounts[0].transfer(1000, to: amazonAccountID) // ૹۚޭ
maki.bankAccounts.append(ktanaka.bankAccounts[0])
maki.bankAccounts[0].transfer(100_000, to: amazonAccountID) // ૹۚޭ
ktanaka.bankAccounts[0].changePassword(to: “5678")
maki.bankAccounts[0].transfer(500_000, to: amazonAccountID) // ૹۚޭʂʁ
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class Human {
// …
var bankAccounts: [BankAccount]
// …
}
protocol BankAccountDelegate: class {
func account(_ account: BankAccount, changePasswordTo newPassword: String) throws -> Int
func account(_ account: BankAccount, transfer amount: Int, to receiver: Int) throws
}
class BankAccount {
// …
func changePassword(to newPassword: String) {
// …
}
func transfer(_ amount: Int, to receiver: Int) {
do {
guard let delegate = self.delegate else { throw NSError() }
try delegate.account(self, transfor: amount, to: receiver)
print("ૹۚޭ")
} catch {
print("ૹࣦۚഊ")
}
}
}
let tanakaAccount = someBank.issueAccount(password: "1234")
ktanaka.bankAccounts.append(tanakaAccount)
let amazonAccountID = someBank.issueAccount(password: "J7BJuGy8ks2T").id
ktanaka.bankAccounts[0].transfer(1000, to: amazonAccountID) // ૹۚޭ
maki.bankAccounts.append(ktanaka.bankAccounts[0])
maki.bankAccounts[0].transfer(100_000, to: amazonAccountID) // ૹۚޭ
ktanaka.bankAccounts[0].changePassword(to: “5678")
maki.bankAccounts[0].transfer(500_000, to: amazonAccountID) // ૹۚޭʂʁ
٤ٌڂڋٜ⯪㧕؊㏰❔؋
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class Human {
// …
var bankAccounts: [BankAccount]
// …
}
protocol BankAccountDelegate: class {
func account(_ account: BankAccount, changePasswordTo newPassword: String) throws -> Int
func account(_ account: BankAccount, transfer amount: Int, to receiver: Int) throws
}
class BankAccount {
// …
func changePassword(to newPassword: String) {
// …
}
func transfer(_ amount: Int, to receiver: Int) {
do {
guard let delegate = self.delegate else { throw NSError() }
try delegate.account(self, transfor: amount, to: receiver)
print("ૹۚޭ")
} catch {
print("ૹࣦۚഊ")
}
}
}
let tanakaAccount = someBank.issueAccount(password: "1234")
ktanaka.bankAccounts.append(tanakaAccount)
let amazonAccountID = someBank.issueAccount(password: "J7BJuGy8ks2T").id
ktanaka.bankAccounts[0].transfer(1000, to: amazonAccountID) // ૹۚޭ
maki.bankAccounts.append(ktanaka.bankAccounts[0])
maki.bankAccounts[0].transfer(100_000, to: amazonAccountID) // ૹۚޭ
ktanaka.bankAccounts[0].changePassword(to: “5678")
maki.bankAccounts[0].transfer(500_000, to: amazonAccountID) // ૹۚޭʂʁ
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true false
ೖ࣌ʹσʔλͷίϐʔͱͯ͠
ೖ͞ΕΔͷ͕͓͔͍͠
class struct
ಉҰൺֱʢ===ʣʹҙຯ͕͋Δ
ʮϥΠϑαΠΫϧʯ͕ߟ͑ΒΕ
Δ
நతͳʮຊମʯ͕ߟ͑ΒΕΔ
#
#
#
#
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class Human {
// …
var bankAccounts: [BankAccount]
// …
}
protocol BankAccountDelegate: class {
func account(_ account: BankAccount, changePasswordTo newPassword: String) throws -> Int
func account(_ account: BankAccount, transfer amount: Int, to receiver: Int) throws
}
class BankAccount {
// …
func changePassword(to newPassword: String) {
// …
}
func transfer(_ amount: Int, to receiver: Int) {
do {
guard let delegate = self.delegate else { throw NSError() }
try delegate.account(self, transfor: amount, to: receiver)
print("ૹۚޭ")
} catch {
print("ૹࣦۚഊ")
}
}
}
let tanakaAccount = someBank.issueAccount(password: "1234")
ktanaka.bankAccounts.append(tanakaAccount)
let amazonAccountID = someBank.issueAccount(password: "J7BJuGy8ks2T").id
ktanaka.bankAccounts[0].transfer(1000, to: amazonAccountID) // ૹۚޭ
maki.bankAccounts.append(ktanaka.bankAccounts[0])
maki.bankAccounts[0].transfer(100_000, to: amazonAccountID) // ૹۚޭ
ktanaka.bankAccounts[0].changePassword(to: “5678")
maki.bankAccounts[0].transfer(500_000, to: amazonAccountID) // ૹۚޭʂʁ
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class Human {
// …
var bankAccounts: [BankAccount]
// …
}
protocol BankAccountDelegate: class {
func account(_ account: BankAccount, changePasswordTo newPassword: String) throws -> Int
func account(_ account: BankAccount, transfer amount: Int, to receiver: Int) throws
}
struct BankAccount {
// …
func changePassword(to newPassword: String) {
// …
}
func transfer(_ amount: Int, to receiver: Int) {
do {
guard let delegate = self.delegate else { throw NSError() }
try delegate.account(self, transfor: amount, to: receiver)
print("ૹۚޭ")
} catch {
print("ૹࣦۚഊ")
}
}
}
let tanakaAccount = someBank.issueAccount(password: "1234")
ktanaka.bankAccounts.append(tanakaAccount)
let amazonAccountID = someBank.issueAccount(password: "J7BJuGy8ks2T").id
ktanaka.bankAccounts[0].transfer(1000, to: amazonAccountID) // ૹۚޭ
maki.bankAccounts.append(ktanaka.bankAccounts[0])
maki.bankAccounts[0].transfer(100_000, to: amazonAccountID) // ૹۚޭ
ktanaka.bankAccounts[0].changePassword(to: “5678")
maki.bankAccounts[0].transfer(500_000, to: amazonAccountID) // ૹࣦۚഊʂ
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struct Player {
let name: String // ໊લɺมߋෆՄ
var level = 1
// ͦͷଞॾʑ
init(name: String) {
self.name = name
}
mutating func levelUp() {
level += 1
}
}
var player = Player(name: "ྋ෩੨༿") {
didSet {
// ηʔϒσʔλ
}
}
player.levelUp() // didSet ͕ݺΕͯϢʔβσʔλ͕ηʔϒ͞ΕΔ
player = Player(name: "ࡩͶͶ") // ϩδοΫΤϥʔɿఆͰ͋Δ player.name ͕มΘͬͯ͠·͏
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class Player {
struct Status {
var level = 1
// ͦͷଞॾʑ
mutating func levelUp() {
level += 1
}
}
let name: String // ໊લɺมߋෆՄ
var status = Status() {
didSet {
// ηʔϒσʔλ
}
}
init(name: String) {
self.name = name
}
}
let player = Player(name: "ྋ෩੨༿")
player.status.levelUp() // status ͷ didSet ͕ݺΕͯϢʔβσʔλ͕ηʔϒ͞ΕΔ
player = Player(name: "ࡩͶͶ") // ΤϥʔɿఆͰ͋Δ player ͕࠶ೖͰ͖ͳ͍ʢఆ௨Γಈ࡞ʣ
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㛀źŧ4XJGU8JGFƵĆ
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