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Protocol と Class と SubClass
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Elvis Shi
August 08, 2017
Programming
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1.6k
Protocol と Class と SubClass
Protocol で宣言したメソッドが Class / SubClass での動き
Elvis Shi
August 08, 2017
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Transcript
Protocol ͱ Class ͱ SubClass for Otemachi.swift x Kyobashi.swift #01
override init() { super.init() emplyedBy = "MAGES. 5pb. Game div"
job = "iOS Developer…?" twitter = "@lovee" qiita = "@lovee" github = "el-hoshino" additionalInfo = "Unity ਏ͍ʘ(^o^)ʗ" class Speaker: Developer { } }
খωλ protocol SomeProtocol { func printSelf() } extension SomeProtocol {
func printSelf() { print("SomeProtocol") } } protocol SomeProtocol { } extension SomeProtocol { func printSelf() { print("SomeProtocol") } } ≠
খωλ protocol SomeProtocol { func printSelf() } extension SomeProtocol {
func printSelf() { print("SomeProtocol") } } class SomeClass: SomeProtocol { func printSelf() { print("SomeClass") } } let sc = SomeClass() sc.printSelf() // SomeClass (sc as SomeProtocol).printSelf() // SomeClass protocol SomeProtocol { } extension SomeProtocol { func printSelf() { print("SomeProtocol") } } class SomeClass: SomeProtocol { func printSelf() { print("SomeClass") } } let sc = SomeClass() sc.printSelf() // SomeClass (sc as SomeProtocol).printSelf() // SomeProtocol ≠
খωλ protocol SomeProtocol { func printSelf() } extension SomeProtocol {
func printSelf() { print("SomeProtocol") } } class SomeClass: SomeProtocol { func printSelf() { print("SomeClass") } } let sc = SomeClass() sc.printSelf() // SomeClass (sc as SomeProtocol).printSelf() // SomeClass protocol SomeProtocol { } extension SomeProtocol { func printSelf() { print("SomeProtocol") } } class SomeClass: SomeProtocol { func printSelf() { print("SomeClass") } } let sc = SomeClass() sc.printSelf() // SomeClass (sc as SomeProtocol).printSelf() // SomeProtocol ≠ Protocol ͷ Interface (PI) એݴ PI σϑΥϧτ࣮ PI ຊ࣮ PI ݺͼग़͠ PI ݺͼग़͠ Protocol ͷ Interface (PI) એݴͳ͠ Protocol ͷ Method (PM) ࣮ Class ͷ Method (CM) ࣮ CM ݺͼग़͠ PM ݺͼग़͠
খωλ ⬆ৄ͘͠⬆ http://qiita.com/HaNoHito/items/f40bfc1717c1e922a5b0 https://speakerdeck.com/nhamada/swiftniokerumethod-dispatchnituite
খωλ protocol SomeProtocol { func printSelf() } extension SomeProtocol {
func printSelf() { print("SomeProtocol") } } class SomeClass: SomeProtocol { func printSelf() { print("SomeClass") } } let sc = SomeClass() sc.printSelf() // SomeClass (sc as SomeProtocol).printSelf() // SomeClass protocol SomeProtocol { } extension SomeProtocol { func printSelf() { print("SomeProtocol") } } class SomeClass: SomeProtocol { func printSelf() { print("SomeClass") } } let sc = SomeClass() sc.printSelf() // SomeClass (sc as SomeProtocol).printSelf() // SomeProtocol ≠ Protocol ͷ Interface (PI) એݴ PI σϑΥϧτ࣮ PI ຊ࣮ PI ݺͼग़͠ PI ݺͼग़͠ Protocol ͷ Interface (PI) એݴͳ͠ Protocol ͷ Method (PM) ࣮ Class ͷ Method (CM) ࣮ CM ݺͼग़͠ PM ݺͼग़͠
ຊ protocol SomeProtocol { func printSelf() } extension SomeProtocol {
func printSelf() { print("SomeProtocol") } } class SomeClass: SomeProtocol { func printSelf() { print("SomeClass") } } let sc = SomeClass() sc.printSelf() // SomeClass (sc as SomeProtocol).printSelf() // SomeClass
ຊ protocol SomeProtocol { func printSelf() } extension SomeProtocol {
func printSelf() { print("SomeProtocol") } } class SomeClass: SomeProtocol { }
ຊ protocol SomeProtocol { func printSelf() } extension SomeProtocol {
func printSelf() { print("SomeProtocol") } } class SomeClass: SomeProtocol { } class SomeSubClass: SomeClass { func printSelf() { print("SomeSubClass") } } class Parent { let someClass: SomeClass // init(someClass: SomeClass) { ... } func printSelf() { someClass.printSelf() } } let ssc = SomeSubClass() let p = Parent(someClass: ssc) ssc.printSelf() // SomeSubClass p.printSelf() // ?
ຊ protocol SomeProtocol { func printSelf() } extension SomeProtocol {
func printSelf() { print("SomeProtocol") } } class SomeClass: SomeProtocol { } class SomeSubClass: SomeClass { func printSelf() { print("SomeSubClass") } } class Parent { let someClass: SomeClass // init(someClass: SomeClass) { ... } func printSelf() { someClass.printSelf() } } let ssc = SomeSubClass() let p = Parent(someClass: ssc) ssc.printSelf() // SomeSubClass p.printSelf() // ? "ग़ྗʁ AɿSomeProtocol BɿSomeClass CɿSomeSubClass
ຊ protocol SomeProtocol { func printSelf() } extension SomeProtocol {
func printSelf() { print("SomeProtocol") } } class SomeClass: SomeProtocol { } class SomeSubClass: SomeClass { func printSelf() { print("SomeSubClass") } } class Parent { let someClass: SomeClass // init(someClass: SomeClass) { ... } func printSelf() { someClass.printSelf() } } let ssc = SomeSubClass() let p = Parent(someClass: ssc) ssc.printSelf() // SomeSubClass p.printSelf() // SomeProtocol "ग़ྗʁ AɿSomeProtocol# BɿSomeClass$ CɿSomeSubClass$
ຊ protocol SomeProtocol { func printSelf() } extension SomeProtocol {
func printSelf() { print("SomeProtocol") } } class SomeClass: SomeProtocol { } class SomeSubClass: SomeClass { func printSelf() { print("SomeSubClass") } } class Parent { let someClass: SomeClass // init(someClass: SomeClass) { ... } func printSelf() { someClass.printSelf() } } let ssc = SomeSubClass() let p = Parent(someClass: ssc) p.printSelf() // SomeProtocol // == (ssc as SomeClass).printSelf() // == (ssc as SomeProtocol).printSelf() Protocol ͷ Interface (PI) એݴ PI ຊ࣮ͳ͠ʢσϑΥϧτ࣮༻ʣ PI ຊ࣮ʢσϑΥϧτ࣮ʣݺͼग़͠ PI ຊ࣮ʢσϑΥϧτ࣮ʣݺͼग़͠ Class (SomeSubClass) ͷ Method ࣮
p.printSelf()Ͱ SomeSubClass Λ ग़ྗͤ͞Δʹʁ
ຊ protocol SomeProtocol { func printSelf() } extension SomeProtocol {
func printSelf() { print("SomeProtocol") } } class SomeClass: SomeProtocol { } class SomeSubClass: SomeClass { func printSelf() { print("SomeSubClass") } } class Parent { let someClass: SomeClass // init(someClass: SomeClass) { ... } func printSelf() { someClass.printSelf() } } let ssc = SomeSubClass() let p = Parent(someClass: ssc) p.printSelf() // SomeProtocol // == (ssc as SomeClass).printSelf() // == (ssc as SomeProtocol).printSelf()
ຊ protocol SomeProtocol { func printSelf() } extension SomeProtocol {
func printSelf() { print("SomeProtocol") } } class SomeClass: SomeProtocol { } class SomeSubClass: SomeClass { func printSelf() { print("SomeSubClass") } } class Parent { let someClass: SomeClass // init(someClass: SomeClass) { ... } func printSelf() { someClass.printSelf() } } let ssc = SomeSubClass() let p = Parent(someClass: ssc) p.printSelf() // SomeProtocol // == (ssc as SomeClass).printSelf() // == (ssc as SomeProtocol).printSelf() protocol SomeProtocol { func printSelf() } extension SomeProtocol { func printSelf() { print("SomeProtocol") } } class SomeClass: SomeProtocol { } class SomeSubClass: SomeClass { func printSelf() { print("SomeSubClass") } } class Parent { let someClass: SomeClass // init(someClass: SomeClass) { ... } func printSelf() { someClass.printSelf() } } let ssc = SomeSubClass() let p = Parent(someClass: ssc) p.printSelf() // SomeProtocol // == (ssc as SomeClass).printSelf() // == (ssc as SomeProtocol).printSelf()
ຊ protocol SomeProtocol { func printSelf() } extension SomeProtocol {
func printSelf() { print("SomeProtocol") } } class SomeClass: SomeProtocol { } class SomeSubClass: SomeClass { func printSelf() { print("SomeSubClass") } } class Parent { let someClass: SomeClass // init(someClass: SomeClass) { ... } func printSelf() { someClass.printSelf() } } let ssc = SomeSubClass() let p = Parent(someClass: ssc) p.printSelf() // SomeProtocol // == (ssc as SomeClass).printSelf() // == (ssc as SomeProtocol).printSelf() protocol SomeProtocol { func printSelf() } extension SomeProtocol { func printSelf() { print("SomeProtocol") } } class SomeClass: SomeProtocol { func printSelf() { (self as SomeProtocol).printSelf() } } class SomeSubClass: SomeClass { override func printSelf() { print("SomeSubClass") } } class Parent { let someClass: SomeClass // init(someClass: SomeClass) { ... } func printSelf() { someClass.printSelf() } } let ssc = SomeSubClass() let p = Parent(someClass: ssc) p.printSelf() // SomeSubClass // == (ssc as SomeClass).printSelf() // == (ssc as SomeProtocol).printSelf()
ຊ protocol SomeProtocol { func printSelf() } extension SomeProtocol {
func printSelf() { print("SomeProtocol") } } class SomeClass: SomeProtocol { } class SomeSubClass: SomeClass { func printSelf() { print("SomeSubClass") } } class Parent { let someClass: SomeClass // init(someClass: SomeClass) { ... } func printSelf() { someClass.printSelf() } } let ssc = SomeSubClass() let p = Parent(someClass: ssc) p.printSelf() // SomeProtocol // == (ssc as SomeClass).printSelf() // == (ssc as SomeProtocol).printSelf() protocol SomeProtocol { func printSelf() } extension SomeProtocol { func printSelf() { print("SomeProtocol") } } class SomeClass: SomeProtocol { func printSelf() { (self as SomeProtocol).printSelf() } } class SomeSubClass: SomeClass { override func printSelf() { print("SomeSubClass") } } class Parent { let someClass: SomeClass // init(someClass: SomeClass) { ... } func printSelf() { someClass.printSelf() } } let ssc = SomeSubClass() let p = Parent(someClass: ssc) p.printSelf() // SomeSubClass // == (ssc as SomeClass).printSelf() // == (ssc as SomeProtocol).printSelf() Protocol ͷ Interface (PI) એݴ PI ຊ࣮ͳ͠ʢσϑΥϧτ࣮༻ʣ Class (SomeSubClass) ͷ Method ࣮ PI ຊ࣮ʢσϑΥϧτ࣮ʣݺͼग़͠ PI ຊ࣮ʢσϑΥϧτ࣮ʣݺͼग़͠ Protocol ͷ Interface (PI) એݴ PI ຊ࣮ʢσϑΥϧτ࣮ྲྀ༻ʣ PI ຊ࣮ʢαϒΫϥεʹΑΔΦʔόʔϥΠυʣ PI ຊ࣮ʢσϑΥϧτ࣮ʣݺͼग़͠ PI ຊ࣮ʢΦʔόʔϥΠυࡁΈʣݺͼग़͠
final ͡Όͳ͍ class ɺ σϑΥϧτ࣮Λ͏߹Ͱɺ PI ͷ࣮Λলུͯ͠ͳΒͳ͍ɻ Զ ݁
⺄⇾獌K15&%ٛڋق⚸ק猳