Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Mobile Programing Property & Method
Search
yuichiro_takahashi
November 12, 2018
Technology
0
160
Mobile Programing Property & Method
Mobile Programming の授業で使うスライドです
yuichiro_takahashi
November 12, 2018
Tweet
Share
More Decks by yuichiro_takahashi
See All by yuichiro_takahashi
App Clip - in a nutshell
yuichirokato
0
330
巨大な機能を VIPER + MicroViewController でいい感じに実装した話
yuichirokato
1
790
Mobile Programming Protocol Extension
yuichirokato
0
79
Mobile Programming Protocol
yuichirokato
0
82
Mobile Programming enum
yuichirokato
0
160
Mobile Programming Optional
yuichirokato
0
130
Mobile Programming Struct
yuichirokato
0
120
Mobile Programming Initializer Beta
yuichirokato
0
120
Mobile Programming Inheritance
yuichirokato
0
140
Other Decks in Technology
See All in Technology
最近のSRE支援ニーズ考察 | sogaoh's LT @ Road to SRE NEXT@札幌
sogaoh
PRO
1
170
貧民的プログラミングのすすめ
kakehashi
PRO
2
330
生成AI×財務経理:PoCで挑むSlack AI Bot開発と現場巻き込みのリアル
pohdccoe
1
880
Amazon Bedrock 2025 年の熱いアップデート (2025/3 時点)
icoxfog417
PRO
3
480
ライフステージの変化を乗り越える 探索型のキャリア選択
tenshoku_draft
2
390
OSSの実装を参考にBedrockエージェントを作る
moritalous
2
380
Platform Engineeringで クラウドの「楽しくない」を解消しよう
jacopen
5
310
「頑張る」を「楽しむ」に変換する技術
tomoyakitaura
10
1.8k
サイト信頼性エンジニアリングとAmazon Web Services / SRE and AWS
ymotongpoo
8
2k
4th place solution Eedi - Mining Misconceptions in Mathematics
rist
0
160
AI_Agent_の作り方_近藤憲児
kenjikondobai
10
1.9k
やっぱり余白が大切だった話
kakehashi
PRO
2
240
Featured
See All Featured
Performance Is Good for Brains [We Love Speed 2024]
tammyeverts
7
670
Unsuck your backbone
ammeep
669
57k
How To Stay Up To Date on Web Technology
chriscoyier
790
250k
Fashionably flexible responsive web design (full day workshop)
malarkey
406
66k
Chrome DevTools: State of the Union 2024 - Debugging React & Beyond
addyosmani
4
400
Building Flexible Design Systems
yeseniaperezcruz
328
38k
The Invisible Side of Design
smashingmag
299
50k
What’s in a name? Adding method to the madness
productmarketing
PRO
22
3.3k
Become a Pro
speakerdeck
PRO
26
5.2k
Facilitating Awesome Meetings
lara
53
6.3k
Templates, Plugins, & Blocks: Oh My! Creating the theme that thinks of everything
marktimemedia
30
2.3k
Dealing with People You Can't Stand - Big Design 2015
cassininazir
366
25k
Transcript
ϓϩύςΟͱϝιου MOBILE PROGRAMMING 11TH NOV
લճ·Ͱͷ͋ Β͢͡
ςΩετ 2. CLASSͷཁૉ ▸ Classͷதʹ༷ʑͳཁૉ͕ଘࡏ͠·͢ class Dog: Animal { let
name: String private let kind: String init(name: String, kind: String) { self.name = name self.kind = kind } func selfIntroduction() { print("My name is \(name)") print("I'm \(kind)") print("nice to meet you sir.") } } ܧঝ Property ΞΫηεम০ࢠ initializer(constructor) Method
ࠓճɾɾɾ
ςΩετ ͜ͷΜͷཁૉʹ͍͓ͭͯ͠͠·͢ ▸ Classͷதʹ༷ʑͳཁૉ͕ଘࡏ͠·͢ class Dog: Animal { let name:
String private let kind: String init(name: String, kind: String) { self.name = name self.kind = kind } func selfIntroduction() { print("My name is \(name)") print("I'm \(kind)") print("nice to meet you sir.") } } Property ΞΫηεम০ࢠ Method
1. PROPERTY
ςΩετ ϓϩύςΟ(PROPERTY)ͱʁ ▸ ؆୯ʹ͍͏ͱΫϥεͷதʹఆٛ͞Ε͍ͯΔมͷ͜ͱ ▸ ͦͷΫϥε͕ͲΜͳσʔλΛ͔࣋ͭΛද͢ ▸ ྫ͑UILabel text
ͱ͍͏໊લͷϓϩύςΟΛ͍࣋ͬͯΔ ▸ Labelʹදࣔ͢ΔจࣈྻͷσʔλͷͨΊͷϓϩύςΟ ▸ Propertyʹ༷ʑͳछྨ͕͋Δ
ςΩετ ࣮ࡍͷίʔυ class Pokemon { // Property let name: String
let type1: String let type2: String? var ability: [String] // Initializer(Constructor) init(name: String, type1: String, type2: String?, ability: [String]) { self.name = name self.type1 = type1 self.type2 = type2 self.ability = ability } // Method func doAbility(name: String) { print("\(self.name)\(name)Λͬͨʂ") print("͔͠͠Կى͜Βͳ͍ʂ") } } ͜ͷ෦͕Property
1-1. STORED PROPERTY
ςΩετ STORED PROPERTYͱʁ ▸ ҰൠతͳϓϩύςΟ ▸ ຊޠͰ֨ೲܕϓϩύςΟ ▸ σʔλΛΠχγϟϥΠβΠϯελϯεԽͨ͠ޙʹೖͯ͠ ͏
▸ جຊతͳ͍ํී௨ͷม, ఆͱมΘΒͳ͍ ▸ ఆ initializer ͰͷΈΛଋറՄೳ
ςΩετ ࣮ࡍͷίʔυ class Pokemon { // Property let name: String
let type1: String let type2: String? var ability: [String] } let slowpoke = Pokemon(name: "Ϡυϯ", type1: "Έͣ", type2: "Τεύʔ", ability: ["ͶΜΓ͖", "ΈͣͰͬΆ͏", "ͳ·͚Δ", "Ͷͬͱ͏"] ) // var Ͱఆٛ͞Ε͍ͯΔͷͰೖՄೳ slowpoke.ability = ["ͳ·͚Δ", "ྫྷౚϏʔϜ", "ϋΠυϩϙϯϓ", “ͲΕ”] // let Ͱఆٛ͞Ε͍ͯΔͷͰ͜ΕͰ͖ͳ͍ slowpoke.name = “Ϡυϥϯ" ͜Εશ෦ Stored Property
1-2. COMPUTED PROPERTY
ςΩετ COMPUTED PROPERTYͱʁ ▸ ͜ΕগʑಛघͳϓϩύςΟ ▸ ຊޠͰܭࢉܕϓϩύςΟͱݺΕΔ ▸ ඞͣ var
Ͱఆٛ͞ΕΔ ▸ จ๏ var propertyName: Type { return value } ▸ ֨ೲܕͷϓϩύςΟͱҧ͍ϓϩύςΟʹΞΫηε͢Δͨͼʹϒ ϩοΫͷதͷॲཧ͕࣮ߦ͞Ε͕ͯฦ͞ΕΔ ▸ ࣌ؒͷ͔͔ΔॲཧೖΕͪΌμϝ
ͲΜͳ࣌ʹ ͏͔ʁ
ϙέϞϯͷྫ Λߟ͑·͢
ςΩετ ϙέϞϯͷྫ ▸ ϙέϞϯਤؑΛ࡞Δ߹Λߟ͑·͢ ▸ ϠυϯͷΑ͏ʹೋͭͷλΠϓΛ࣋ͭ ϙέϞϯ ▸ λΠϓ1/λΠϓ2ͱ͍͏ܗͰදࣔ͞ Ε·͢
▸ ͜ͷจࣈΛදࣔ͢Δࡍʹߦ͏ॲཧ ࣍ͷΑ͏ʹͳΔͣ
ςΩετ ࣮ࡍͷίʔυ class Pokemon { // Property let name: String
let type1: String let type2: String? var ability: [String] } let slowpoke = Pokemon(name: "Ϡυϯ", type1: "Έͣ", type2: "Τεύʔ", ability: ["ͶΜΓ͖", "ΈͣͰͬΆ͏", "ͳ·͚Δ", "Ͷͬͱ͏"] ) let type1 = slowpoke.type1 if let type2 = slowpoke.type2 { print("λΠϓ: \(type1)/\(type2)") } else { print("λΠϓ: \(type1)") } ͜Εશ෦ Stored Property
COMPUTED PROPERTY Λ͏ͱ
ςΩετ ࣮ࡍͷίʔυ class Pokemon { // Property let name: String
let type1: String let type2: String? var ability: [String] // Computed Property var typeText: String { if let t2 = type2 { return "λΠϓ: \(type1)/\(t2)" } return "λΠϓ: \(type1)" } } let slowpoke = Pokemon(name: "Ϡυϯ", type1: "Έͣ", type2: "Τεύʔ", ability: ["ͶΜΓ͖", "ΈͣͰͬΆ͏", "ͳ·͚Δ", "Ͷͬͱ͏"] ) print(slowpoke.typeText) ͜Ε͕ Computed Property
ςΩετ ࣮ࡍͷίʔυ class Pokemon { // Property let name: String
let type1: String let type2: String? var ability: [String] // Computed Property var typeText: String { if let t2 = type2 { return "λΠϓ: \(type1)/\(t2)" } return "λΠϓ: \(type1)" } } let slowpoke = Pokemon(name: "Ϡυϯ", type1: "Έͣ", type2: "Τεύʔ", ability: ["ͶΜΓ͖", "ΈͣͰͬΆ͏", "ͳ·͚Δ", "Ͷͬͱ͏"] ) print(slowpoke.typeText) ͜Ε͕ Computed Property ΞΫηεͷํ Stored Propertyͱಉ͡
1-3. LAZY PROPERTY
ςΩετ LAZY PROPERTYͱʁ ▸ ͜ΕগʑಛघͳϓϩύςΟ ▸ ຊޠͰԆܕϓϩύςΟͱݺΕΔ ▸ ͪ͜Βඞͣ var
Ͱఆٛ͞ΕΔ ▸ จ๏ lazy var propertyName: Type { return value }() ▸ ѻ͍ํ΄ͱΜͲ stored property ͱಉ͕ͩ͡ ▸ ࠷ॳʹΞΫηε͞ΕΔ·ͰॳظԽ͕͞Εͳ͍ ▸ ͪ͜Βٯʹ࣌ؒͷ͔͔ΔॲཧΛೖΕΔͨΊʹ͏ ▸ ViewControllerͰΑ͍͘·͢
ςΩετ ࣮ࡍͷίʔυ class Pokemon { // Property let name: String
let type1: String let type2: String? var ability: [String] lazy var skill: String = { return "͍͔͘" }() } let slowpoke = Pokemon(name: "Ϡυϯ", type1: "Έͣ", type2: "Τεύʔ", ability: ["ͶΜΓ͖", "ΈͣͰͬΆ͏", "ͳ·͚Δ", "Ͷͬͱ͏"] ) print(slowpoke.skill) ͜Ε͕ Lazy Property ΞΫηεͷํ Stored Propertyͱಉ͕ͩ͡ ݺΕΔ·ͰॳظԽ͞Εͳ͍
2 PROPERTY OBSERVING
ςΩετ PROPERTY OBSERVINGͱʁ ▸ ͪ͜ΒϓϩύςΟͷछྨͰͳ͘ϓϩύςΟͷػೳ ▸ Observeࢹͱ͍͏ҙຯ ▸ ϓϩύςΟͷมߋΛݕͯ͠ॲཧΛهड़͢Δ͜ͱ͕Ͱ͖ΔΑ͏ʹͳΔػೳ ▸
ϓϩύςΟͷมߋલʹݺΕΔ willSet { … } ▸ ϓϩύςΟͷมߋޙʹݺΕΔ didSet { … } ▸ ͷ2छྨ ▸ { … } ʹॲཧΛॻ͖ࠐΜͰ͍͘
2. ϝιου
ςΩετ ϝιουʁ ▸ ΫϥεߏମͳͲʹఆٛ͞Ε͍ͯΔؔͷ͜ͱ ▸ ओʹΠϯελϯε͕อ͍࣋ͯ͠ΔσʔλΛՃͨ͠Γมߋ͠ ͨΓ͢Δ ▸ ϝιου͔Βಉ͡Ϋϥεʹఆٛ͞Ε͍ͯΔଞͷϝιου ϓϩύςΟʹΞΫηε͢Δ͜ͱ͕Ͱ͖Δ
▸
ςΩετ ࣮ࡍͷίʔυ class Pokemon { // Stored Property let name:
String // লུɾɾɾ // Initializer(Constructor) init(name: String, type1: String, type2: String?, ability: [String]) { // লུɾɾɾ } // Method func doAbility(name: String) { print("\(self.name)\(name)Λͬͨʂ") print("͔͠͠Կى͜Βͳ͍ʂ") } func getAbility(abilityName: String) { } func forgetAbility(abilityName: String) { } } // ϝιουݺͼग़͠ slowpoke.doAbility(name: “ͳ·͚Δ") ͜Ε͕ϝιουఆٛ ͜Ε͕ϝιουݺͼग़͠
3. ΞΫηεम ০ࢠ
ςΩετ ΞΫηεम০ࢠʁ ▸ ӳޠͰ Access Control ▸ มఆɺΫϥεɺϝιουͳͲʹର͢ΔΞΫηεͷ੍ݶΛཧͰ͖Δػೳ ▸ ͜ΕʹΑΓΫϥεͷ֎͔Β৮ͬͯཉ͘͠ͳ͍ϓϩύςΟϝιουΛӅ͢͜ͱ͕Ͱ͖
ΔΑ͏ʹͳͬͨΓ ▸ ٯʹϞδϡʔϧͷ֎ʹ·Ͱެ։͢Δ͜ͱͰ͖ΔΑ͏ʹͳΔ(ผϓϩδΣΫτ͔Βݟ͑ ΔΑ͏ʹͳΔ) ▸ SwiftͰΏΔ͍ॱʹ open, public, internal, fileprivate, private ͷޒ͕ͭଘࡏ͢Δ ▸ ΫϥεϓϩύςΟɺϝιουͷલʹ͚ͭͯ͏ ▸ σϑΥϧτͰ internal
ςΩετ ҧ͍·ͱΊ ग़య: https://qiita.com/GATA/items/90341f56a56ff584e756
ςΩετ ࣮ࡍͷίʔυ open class Pokemon { // Stored Property let
name: String // লུɾɾɾ // Initializer(Constructor) init(name: String, type1: String, type2: String?, ability: [String]) { // লུɾɾɾ } // Method private func doAbility(name: String) { print("\(self.name)\(name)Λͬͨʂ") print("͔͠͠Կى͜Βͳ͍ʂ") } func getAbility(abilityName: String) { } func forgetAbility(abilityName: String) { } } // Error! slowpoke.doAbility(name: “ͳ·͚Δ") ݺͼग़ͤͳ͘ͳΔ ͜ͷϝιουΛϓϥΠϕʔτʹ ΫϥεΦʔϓϯʹ(ผϓϩδΣΫτ͔Βݟ͑Δ) Կఆٛ͠ͳ͍߹ internal ѻ͍ʹͳΔ