Mobile Programming Inheritance

モバイルプログラミングの授業で使うスライドです

Transcript

1. ܧঝ
   MOBILE PROGRAMMING 26TH NOV
   

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2. 1. ܧঝʹ͍ͭ
   ͯ
   

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3. ςΩετ
   ܧঝͬͯʁ
   ▸ Ϋϥε͕࣋ͭػೳͷҰͭ
   ▸ ਌͕࣋ͭϓϩύςΟ΍ϝιουΛड͚ܧ͙
   ▸ ܧঝݩͷΫϥεΛ਌Ϋϥε(super class)
   ▸ ܧঝઌͷΫϥεΛࢠΫϥε(sub class)ͱ͍͏
   ▸ จ๏͸ class SubClass: Super Class { ... }
   ▸ swift Ͱ͸࢖͏৔ॴ͸ݶΒΕΔ
   ▸ جຊతʹ͸ϙϦϞʔϑΟζϜ(ଟଶੑ)ͷͨΊʹ࢖ΘΕΔ
   

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4. ςΩετ
   ࣮ࡍͷίʔυ
   class Pokemon {
   let name: String
   var ability: String
   var level: Int = 0
   init(name: String, level: Int, ability: String = "͍ͨ͋ͨΓ") {
   self.name = name
   self.level = level
   self.ability = ability
   }
   func displayStatus() {
   print("\(self.name)ͷϨϕϧ͸\(self.level)Ͱ͢ɻ")
   }
   func doAbility(to pokemon: Pokemon) {
   print("\(self.name)͸\(pokemon.name)ʹ\(self.ability)ͨ͠ʂ")
   }
   }
   class Metagross: Pokemon {
   init(level: Int) {
   super.init(name: "ϝλάϩε", level: level, ability: "ίϝοτύϯν")
   }
   }
   

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5. 2. ਌Ϋϥεͱ
   ࢠΫϥε
   

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6. ςΩετ
   ਌ΫϥεͱࢠΫϥε
   ▸ جຊతʹࢠΫϥε͔Β਌ΫϥεͷϓϩύςΟ΍ϝιου͸શͯΞΫ
   ηεՄೳ
   ▸ ͦͷࡍ͸self ͷ୅ΘΓʹsuperΛ࢖͏
   ▸ ࢠΫϥεͰ͸਌ΫϥεͷϝιουΛॻ͖׵͑Δ͜ͱ͕Ͱ͖Δ
   ▸ ͜ΕΛϝιουͷΦʔόʔϥΠυͱݴ͏
   ▸ ࢠΫϥεʹ͸৽͘͠ϝιου΍ϓϩύςΟΛఆٛ͢Δ͜ͱ͕Ͱ͖Δ
   ▸ ࢠΫϥε͸਌Ϋϥεͷܕ΋Ҿ͖ܧ͙
   

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7. ςΩετ
   ࣮ࡍͷίʔυ
   class Pokemon {
   let name: String // pokemon's name (ex pikachu)
   fileprivate(set) var level: Int // pokemon's level
   fileprivate(set) var health: Int = 1 // pokemon's hit point
   init(name: String, level: Int) {
   self.name = name
   self.level = level
   self.health = level * 2
   }
   func displayStatus() {
   print("Name: \(self.name)")
   print("Lv: \(self.level)")
   print("HP: \(self.health)")
   }
   func doAbility() {
   print("\(self.name)ͷ͍ͨ͋ͨΓʂ")
   }
   }
   class Slowpoke: Pokemon {
   init(level: Int) {
   // ਌ΫϥεͷϝιουΛݺͼग़͢
   super.init(name: "Ϡυϯ", level: level)
   }
   // ਌Ϋϥεʹఆٛ͞Ε͍ͯΔϝιουΛॻ͖׵͑Δ
   override func doAbility() {
   print("\(self.name)ͷͶΜΓ͖ʂ")
   }
   }
   let slowpoke: Pokemon = Slowpoke(level: 10)

   

   slowpoke.displayStatus()
   slowpoke.doAbility() // ϠυϯͷͶΜΓ͖ʂͱදࣔ͞ΕΔ(͍ͨ͋ͨΓͰ͸ͳ͍)
   

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