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 Programming Control Flow 2
Search
yuichiro_takahashi
October 15, 2018
Technology
0
52
Mobile Programming Control Flow 2
MobileProgrammingの授業で使うスライドです!
yuichiro_takahashi
October 15, 2018
Tweet
Share
More Decks by yuichiro_takahashi
See All by yuichiro_takahashi
App Clip - in a nutshell
yuichirokato
0
360
巨大な機能を VIPER + MicroViewController でいい感じに実装した話
yuichirokato
1
820
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
[OCI Skill Mapping] AWSユーザーのためのOCI – IaaS編(Compute/Storage/Networking) (2025年10月8日開催)
oracle4engineer
PRO
1
170
CREが作る自己解決サイクルSlackワークフローに組み込んだAIによる社内ヘルプデスク改革 #cre_meetup
bengo4com
0
270
サイバーエージェント流クラウドコスト削減施策「みんなで金塊堀太郎」
kurochan
4
2.2k
Azureコストと向き合った、4年半のリアル / Four and a half years of dealing with Azure costs
aeonpeople
1
250
CNCFの視点で捉えるPlatform Engineering - 最新動向と展望 / Platform Engineering from the CNCF Perspective
hhiroshell
0
120
それでも私が品質保証プロセスを作り続ける理由 #テストラジオ / Why I still continue to create QA process
pineapplecandy
0
150
混合雲環境整合異質工作流程工具運行關鍵業務 Job 的經驗分享
yaosiang
0
140
[2025年10月版] Databricks Data + AI Boot Camp
databricksjapan
1
240
あなたの知らない Linuxカーネル脆弱性の世界
recruitengineers
PRO
3
130
Introduction to Bill One Development Engineer
sansan33
PRO
0
300
Introdução a Service Mesh usando o Istio
aeciopires
1
280
私のMCPの使い方
tsubakimoto_s
0
120
Featured
See All Featured
BBQ
matthewcrist
89
9.8k
Art, The Web, and Tiny UX
lynnandtonic
303
21k
Automating Front-end Workflow
addyosmani
1371
200k
ReactJS: Keep Simple. Everything can be a component!
pedronauck
667
130k
Agile that works and the tools we love
rasmusluckow
331
21k
Save Time (by Creating Custom Rails Generators)
garrettdimon
PRO
32
1.7k
Six Lessons from altMBA
skipperchong
29
4k
Building a Modern Day E-commerce SEO Strategy
aleyda
44
7.8k
The Psychology of Web Performance [Beyond Tellerrand 2023]
tammyeverts
49
3.1k
Documentation Writing (for coders)
carmenintech
75
5.1k
Building Applications with DynamoDB
mza
96
6.7k
Producing Creativity
orderedlist
PRO
347
40k
Transcript
੍ޚߏจ2 MOBILEPROGRAMMING OCT, 15TH
ςΩετ ੍ޚߏจʂ ▸ iffor-inͳͲذ܁Γฦ͠ॲཧΛಛఆͷจʹߏԽͨ͠ͷ ▸ ϓϩάϥϜͷߏ ॱ࣍ɺબɺ෮ͷࡾͭʹྨ͞ΕΔ ▸ ͜ΕΒΛΈ߹Θͤͯϓϩάϥϛϯά͢Δํ๏ΛߏԽϓϩάϥ ϛϯάͱݺͿ
▸ ࠓճ܁Γฦ͠ͷߏจʹߜͬͯͬͯߦ͖·͢ ▸ ݴޠʹΑͬͯforwhileͱ͍͏ߏจ͕ଘࡏ͠ͳ͍(or ͨͩͷγ ϯλοΫεγϡΨʔ)
1. FOR-IN
ςΩετ FOR-INจ ▸ ܁Γฦ͠ॲཧΛ͢Δͱ͖ͷجຊతͳߏจ ▸ ߏจ for <ม> in <Array
or Range> { /* loop */ } ▸ Լهͷforͱ۠ผ͢ΔͨΊʹ for-inͱݺΕ·͢ ▸ for (int i = 0; i <= 10, i++) { /* loop */ } ▸ ͷΑ͏ͳߏจSwift 3.0 Ҏ߱ഇࢭ͞Ε·ͨ͠ ▸ ͜ͷΑ͏ͳforจΛC-style forͱݺͼ·͢ ▸ forจಛఆͷճ܁Γฦ͠ॲཧΛ͍ͨ͠ͱ͍͏Α͏ͳ߹ʹΑ͍͘·͢
ςΩετ ͳΜͰC-STYLE FOR ফ͑ͨʁ ▸ ؆ܿʹ͍͏ͱSwiftΒ͘͠ͳ͍͔Β ▸ CݴޠܦݧऀҎ֎ʹΘ͔Γʹ͍͘͠ ▸ ॳΊͯSwiftΛֶͿਓʹͱ֮ͬͯ͑ʹ͍͘
▸ ΠϯΫϦϝϯτɺσΫϦϝϯτʹΑΔ͋Δ͠ for (let i = 0; i <= 10; i++) { // loop... for (let j = 0; j <= 10;, i++) { print("it's a infinity loop!") } }
ͰͲ͏ͬͯ ϧʔϓͤ͞Δʁ
1-1.RANGE
ςΩετ RANGE(ൣғԋࢉࢠ)Λ͏ ▸ Ұ൪؆୯ͳΓํ ▸ switchͷ࣌ʹग़͖ͯͨΑ͏ʹ 0…10 ͱͯ͠ 0 ~
10·Ͱͷ Sequence(Array)Λ࡞ ▸ ͦΕΛfor-inͱΈ߹ΘͤΔ // Range let range = 0...10 for number in range { print("number: \(number)") }
ςΩετ FOR-IN STLIDE ▸ for-inͱ stlide Λ༻͢Δ͜ͱͰִؒΛ։͚ͯϧʔϓͤ͞Δ ͜ͱ͕Ͱ͖·͢ // 0͔Β10·ͰೋͭͱͼͰϧʔϓ
for number in stride(from: 0, to: 10, by: 2) { print("number: \(number)") }
1-2. ARRAY
ςΩετ ARRAYΛ͏ ▸ ͜ΕඇৗʹΦʔιυοΫεͳΓํ ▸ ఆٛࡁΈͷarrayʹରͯ͠for-inΛ͏ ▸ indexͰΞΫηε͢Δํ๏ʹൺ Array ͷൣғ֎ʹΞΫηε
ͯ͠͠·͏͜ͱ͕ͳ͍ͨΊ҆શ // Array let array = ["sunday", "monday", "tuesday", "wednsday", "thursday", "friday", "Saturday"] for number in array { print("number: \(number)") }
1-3.DICTIONARY
ςΩετ DICTIONARYΛ͏ ▸ ͜ΕׂͱΦʔιυοΫεͳΓํ ▸ ఆٛࡁΈͷdictionaryʹରͯ͠for-inΛ͏ ▸ key, value ͷܗʹͳ͍ͬͯΔͨΊ
for ͷҾೋͭʹͳΔ // Dictionary let dic = ["Animal": "Cat", "Fruit": "Banana"] for (key, value) in dic { print("key: \(key)") print("value: \(value)") }
2. WHILE
ςΩετ WHILEจ ▸ ܁Γฦ͠ॲཧΛ͢Δͱ͖ͷجຊతͳߏจ ▸ ߏจ while <ϧʔϓ݅> { /*
loop */ } ▸ whileจಛఆͷ݅ʹϚον͢Δ·Ͱ܁Γฦ͠ॲཧΛͨ͠ ͍࣌ʹ͏ var count = 0 var total = 0 while count < 5 { count += 1 total += count } print("count: \(count) total: \(total)")
3. ੍ޚసૹ
ςΩετ ੍ޚసૹ(CONTROL TRANSFER STATEMENTS)ʁ ▸ ੍ޚసૹ(Control Transfer Statements)ϓϩάϥϜͷॲཧ ΛΛ͋Δॴ͔ΒผͷॴʹҠ͢ػೳͷ͜ͱ ▸
ྫ͑continue break, switchͷfallthroughͳͲ͕͋Δ ▸ ؔͷreturn Τϥʔॲཧʹग़ͯ͘Δ throw ಉ͡ ▸ ࠓճbreakͱcontinueʹߜ͓ͬͯΛ͠·͢
3-1.BREAK
ςΩετ BREAK ▸ ଞͷݴޠಉ༷Swiftʹ break ͕͋Γ·͢ ▸ ಛఆͷ݅ͷ࣌ʹϧʔϓ͔Βൈ͚͍ͨ߹ʹbreakΛ༻͠ ·͢ for
i in 0...10 { // 11ճϧʔϓͤ͞·͢ɻ if i >= 3 { // i ͕ 3 Ҏ্ʹͳͬͨͱ͖ʹൈ͚Δ break } print(i) }
3-2. CONTINUE
ςΩετ CONTINUE ▸ ଞͷݴޠಉ༷Swiftʹ continue ͕͋Γ·͢ ▸ ಛఆͷ݅ͷ࣌ʹॲཧΛεΩοϓ͍ͨ͠߹continueΛ ༻͠·͢ ▸
breakͱҧ͍loopΛൈ͚Δ͜ͱ͋Γ·ͤΜ for i in 0...10 { if i % 3 == 0 { // 3ͷഒͷ࣌εΩοϓ continue } print(i) }
͓·͚
ςΩετ FORWHILEΛΘͳ͍ʁ ▸ ಄Ͱগ͓ͨ͠͠௨ΓݴޠʹΑͬͯforwhile͕ଘࡏ͠ ͳ͍Ͱ͢ ▸ ͰͲ͏ͬͯ܁Γฦ͠Λදݱ͢ΔͷͰ͠ΐ͏͔ʁ ▸ ํ๏͍͔ͭ͋͘ΓҰͭߴ֊ؔΛ͏ํ๏ ▸
͏Ұͭ࠶ؼؔΛ͏ํ๏Ͱ͢
͓·͚: ߴ֊ؔ
ςΩετ ߴ֊ؔʁ ▸ ؔΛҾʹͱͬͨΓɺؔΛฦؔ͢ ▸ ͍͜͠ͷͰࠓৄ͘͠આ໌͠·ͤΜ ▸ ܁Γฦ͠ͷͨΊͷ༗໊Ͳ͜ΖͰ map,
forEach ͳͲ͕͋ Γ·͢ ▸ for-inΛ͏ํ๏ΑΓ؆ܿʹॻ͘͜ͱ͕Ͱ͖·͢
ςΩετ ͨͱ͑ʁ ▸ ஈͷϦετʹରͯ͠ফඅ੫Λ͔͚ͨޙͷஈͷϦετΛੜ ͢ΔྫΛߟ͑·͢ ▸ ͜ΕΛfor-inͰॻ͘ͱ࣍ͷΑ͏ʹͳΓ·͢
ςΩετ ϥϯμϜʹੜͨ͠ͷഒΛٻΊΔ // ফඅ੫ let taxRate = 0.08 // ஈͷϦετ
let prices: [Double] = [10000, 9800, 34570, 29800, 114514] // ·ۭͣͷྻΛੜ var newPrices = [Double]()
ςΩετ ϥϯμϜʹੜͨ͠ͷഒΛٻΊΔ // ফඅ੫ let taxRate = 0.08 // ஈͷϦετ
let prices: [Double] = [10000, 9800, 34570, 29800, 114514] // ·ۭͣͷྻΛੜ var newPrices = [Double]() // for-inͰҰྻ͔ΒऔΓग़ͯ͠ɾɾɾ for price in prices { }
ςΩετ ϥϯμϜʹੜͨ͠ͷഒΛٻΊΔ // ফඅ੫ let taxRate = 0.08 // ஈͷϦετ
let prices: [Double] = [10000, 9800, 34570, 29800, 114514] // ·ۭͣͷྻΛੜ var newPrices = [Double]() // for-inͰҰྻ͔ΒऔΓग़ͯ͠ɾɾɾ for price in prices { let newPrice = price * taxRate newPrices.append(newPrice) // ·ͨྻೖΕΔʂ }
߇͑Ίʹݴͬͯ ໘
ςΩετ ߴ֊ؔΛͬͨ߹ ▸ ߴ֊ؔ(ࠓճmap)Λ͏ͱ࣍ͷΑ͏ʹॻ͘͜ͱ͕Ͱ͖· ͢ // ফඅ੫ let taxRate =
0.08 // ஈͷϦετ let prices: [Double] = [10000, 9800, 34570, 29800, 114514]
ςΩετ ߴ֊ؔΛͬͨ߹ ▸ ߴ֊ؔ(ࠓճmap)Λ͏ͱ࣍ͷΑ͏ʹॻ͘͜ͱ͕Ͱ͖· ͢ // ফඅ੫ let taxRate =
0.08 // ஈͷϦετ let prices: [Double] = [10000, 9800, 34570, 29800, 114514] let newPrices = prices.map { $0 * taxRate } // ʂ
None
͍ʂ
ςΩετ ͍ʂ ▸ ߴ֊ؔΛ͏ͱͱͯ؆ܿʹ͔͚·͢ ▸ ࠓճͬͨmapͱ͍͏ߴ֊ؔྻͷதʹॱ൪ʹड͚ औͬͨॲཧΛద༻͠ɺ৽͍͠ྻΛੜ͢ΔؔͰ͢ ▸ { $0
* taxRate } ͷ෦͕ྻͷதશͯʹద༻͞Εɺͦͷ݁ Ռ͕৽͍͠ྻͱͳΓ·͢ ▸ ߴ֊ؔΛ͏͜ͱͰ༨ܭͳίʔυΛল͖ɺͲΜͳॲཧΛ ͍ͨ͠ͷ͔ʁͱ͍͏෦ʹूதͰ͖·͢
ͪΐͬͱͬ ͯʂ (TWITTERฒײ)
ͦͦؔͬͯ ͳΜ͚ͩͬʁ