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
170
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
350
巨大な機能を VIPER + MicroViewController でいい感じに実装した話
yuichirokato
1
810
Mobile Programming Protocol Extension
yuichirokato
0
83
Mobile Programming Protocol
yuichirokato
0
87
Mobile Programming enum
yuichirokato
0
170
Mobile Programming Optional
yuichirokato
0
140
Mobile Programming Struct
yuichirokato
0
130
Mobile Programming Initializer Beta
yuichirokato
0
120
Mobile Programming Inheritance
yuichirokato
0
150
Other Decks in Technology
See All in Technology
LangSmith×Webhook連携で実現するプロンプトドリブンCI/CD
sergicalsix
1
230
ビズリーチにおけるリアーキテクティング実践事例 / JJUG CCC 2025 Spring
visional_engineering_and_design
1
120
Tokyo_reInforce_2025_recap_iam_access_analyzer
hiashisan
0
180
ネットワーク保護はどう変わるのか?re:Inforce 2025最新アップデート解説
tokushun
0
210
MobileActOsaka_250704.pdf
akaitadaaki
0
120
Getting to Know Your Legacy (System) with AI-Driven Software Archeology (WeAreDevelopers World Congress 2025)
feststelltaste
1
130
自律的なスケーリング手法FASTにおけるVPoEとしてのアカウンタビリティ / dev-productivity-con-2025
yoshikiiida
1
16k
Zephyr RTOSを使った開発コンペに参加した件
iotengineer22
1
220
高速なプロダクト開発を実現、創業期から掲げるエンタープライズアーキテクチャ
kawauso
2
9.2k
AWS認定を取る中で感じたこと
siromi
1
190
Zero Data Loss Autonomous Recovery Service サービス概要
oracle4engineer
PRO
2
7.7k
Sansanのデータプロダクトマネジメントのアプローチ
sansantech
PRO
0
150
Featured
See All Featured
Product Roadmaps are Hard
iamctodd
PRO
54
11k
Thoughts on Productivity
jonyablonski
69
4.7k
Save Time (by Creating Custom Rails Generators)
garrettdimon
PRO
31
1.3k
Music & Morning Musume
bryan
46
6.6k
Producing Creativity
orderedlist
PRO
346
40k
A Tale of Four Properties
chriscoyier
160
23k
GitHub's CSS Performance
jonrohan
1031
460k
The Language of Interfaces
destraynor
158
25k
Testing 201, or: Great Expectations
jmmastey
43
7.6k
The Success of Rails: Ensuring Growth for the Next 100 Years
eileencodes
45
7.5k
Bootstrapping a Software Product
garrettdimon
PRO
307
110k
Building an army of robots
kneath
306
45k
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