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
Code reviewing in iOS app development
Search
yashigani
May 20, 2015
Programming
9
4.5k
Code reviewing in iOS app development
Code reviewing in iOS app development
@Kansai Mobile Conference #2
yashigani
May 20, 2015
Tweet
Share
More Decks by yashigani
See All by yashigani
Hatena Engineer Seminar #10
yashigani
0
2.3k
Dependency Injection in iOS Apps
yashigani
2
480
Multiple layout with UITableViewCell
yashigani
1
3.5k
Lazy stored property
yashigani
3
2.1k
Useful 3 techniques developing in iOS Apps
yashigani
0
1.5k
Introduction to WebKitPlus
yashigani
2
2.4k
Types in Swift
yashigani
5
2.3k
Swift with apps by Hatena
yashigani
13
29k
What's new WebKit.framework
yashigani
2
1.5k
Other Decks in Programming
See All in Programming
AIともっと楽するE2Eテスト
myohei
9
3.1k
GPUを計算資源として使おう!
primenumber
1
290
SQLアンチパターン第2版 データベースプログラミングで陥りがちな失敗とその対策 / Intro to SQL Antipatterns 2nd
twada
PRO
27
8.1k
Vibe Codingの幻想を超えて-生成AIを現場で使えるようにするまでの泥臭い話.ai
fumiyakume
18
9.2k
MCPで実現できる、Webサービス利用体験について
syumai
7
1.9k
階層化自動テストで開発に機動力を
ickx
1
420
Gemini CLIの"強み"を知る! Gemini CLIとClaude Codeを比較してみた!
kotahisafuru
2
150
初学者でも今すぐできる、Claude Codeの生産性を10倍上げるTips
s4yuba
16
13k
Workers を定期実行する方法は一つじゃない
rokuosan
0
130
MCPを使ってイベントソーシングのAIコーディングを効率化する / Streamlining Event Sourcing AI Coding with MCP
tomohisa
0
180
抽象化という思考のツール - 理解と活用 - / Abstraction-as-a-Tool-for-Thinking
shin1x1
1
680
顧客の画像データをテラバイト単位で配信する 画像サーバを WebP にした際に起こった課題と その対応策 ~継続的な取り組みを添えて~
takutakahashi
4
1.4k
Featured
See All Featured
How to Create Impact in a Changing Tech Landscape [PerfNow 2023]
tammyeverts
53
2.9k
Reflections from 52 weeks, 52 projects
jeffersonlam
351
21k
[RailsConf 2023] Rails as a piece of cake
palkan
55
5.7k
Why You Should Never Use an ORM
jnunemaker
PRO
58
9.5k
Build your cross-platform service in a week with App Engine
jlugia
231
18k
Intergalactic Javascript Robots from Outer Space
tanoku
271
27k
RailsConf & Balkan Ruby 2019: The Past, Present, and Future of Rails at GitHub
eileencodes
138
34k
The Pragmatic Product Professional
lauravandoore
35
6.8k
Into the Great Unknown - MozCon
thekraken
40
1.9k
How To Stay Up To Date on Web Technology
chriscoyier
790
250k
Understanding Cognitive Biases in Performance Measurement
bluesmoon
29
1.8k
How STYLIGHT went responsive
nonsquared
100
5.6k
Transcript
J04ΞϓϦͷίʔυϨϏϡʔ Ͱ࠷ۙؾʹͳΔͱ͜Ζ @yashigani ؔϞόΠϧΞϓϦݚڀձ#2
yashigani id:yashigani_w @yashigani Mobile Application Engineer http://yashigani.hatenablog.com Hatena
https://flic.kr/p/b3j2n2 ίʔυϨϏϡʔ ͯ͠·͔͢ʁ
ͳΜ͔ωλ୳ͯͨ͠ΜͰ͚͢Ͳಛʹ͜Εͬ ͯͷ͕ແͯ͘ɼ͋ΕʁίʔυϨϏϡʔͱ ͔ΊͬͪΌҙࣝߴͦ͏Ͱ͍͍Μ͡ΌͶʁͬ ͓ͯͬͯ·ͱΊͯΈͨΜͰ͢Αɽͦͨ͠ ΒίʔυϨϏϡʔͷ؍ͬͯΑ͘ߟ͑ͨΒ ΞϓϦέʔγϣϯΛઃܭ͢Δͱ͖ʹؾΛ ͚ͭΔ͖ϙΠϯτ·ͱΊΈ͍ͨͳײ͡ ͳΜͰ͢ΑɽͳΜͰͦ͏͍͏͜ͱ͢ΜͰ ͚͢ͲɼίʔυϨϏϡʔ͓͍ͬͯͯͨ͠ ΄͏͕ͳΜ͔͋Γ͕ͨΈ͕ߴ͍ΜͰࠓ
ίʔυϨϏϡʔͷͱ͍͏͜ͱʹͳΓ·͢ɽ
TUPSZCPBSEؔ࿈
͜ΕstoryboardͰͰ͖·ͤΜ͔ʁ • ࡉ͔͍viewͷઃఆͰ͖Δ͚ͩstoryboardͰ݁͞ ͤͨ΄͏ָ͕ • ࢄ͢Δͱ͋ͱͰ͠ʹ͍͘ • ϨΠΞτͷίʔυجຊॻ͔ͳ͍ • (AutoLayoutͷϨϏϡʔࠜੑͰΔ)
storyboardͰઃఆͰ͖ͳ͍ • viewDidLoadͱ͔awakeFromNibͰೖΕΔͷ! • propertyͷdidSetΛͬͨ΄͏͕៉ྷ • Objective-C?ૣ͘غͯͯ͘Ε
class ViewController: UIViewController { @IBOutlet weak var textView: UITextView! {
didSet { textView.textContainerInset = UIEdgeInsets(top: 16, left: 16, bottom: 16, right: 16) } } }
IBInspectableΛઃఆ͢Δ • ઃఆ͠ͳ͍ཧ༝ͳ͍ • ΠϚΠν͍ʹ͔ͬͨ͘ΧελϜϏϡʔͷ࠶ར༻ੑ ͕ΊͬͪΌ্͕Γ·͢
@IBDesignable class BorderedLabel: UILabel { @IBInspectable var borderColor: UIColor? {
get { return UIColor(CGColor: self.layer.borderColor) } set { self.layer.borderColor = newValue?.CGColor ?? nil } } @IBInspectable var borderWidth: CGFloat = 1.0 { didSet { layer.borderWidth = borderWidth } } @IBInspectable var cornerRadius: CGFloat = 0.0 { didSet { layer.cornerRadius = cornerRadius layer.masksToBounds = cornerRadius > 0.0 } } }
@IBDesignable class BorderedLabel: UILabel { @IBInspectable var borderColor: UIColor? {
get { return UIColor(CGColor: self.layer.borderColor) } set { self.layer.borderColor = newValue?.CGColor ?? nil } } @IBInspectable var borderWidth: CGFloat = 1.0 { didSet { layer.borderWidth = borderWidth } } @IBInspectable var cornerRadius: CGFloat = 0.0 { didSet { layer.cornerRadius = cornerRadius layer.masksToBounds = cornerRadius > 0.0 } } }
7JFX$POUSPMMFSؔ࿈
͜ͷpropertyݮΒͤ·ͤΜ͔ʁ • stored propertyঢ়ଶͳͷͰͰ͖Δ͚ͩݮΒͨ͠΄ ͏͕Α͍ • computed propertyผ • closureͰΩϟϓνϟ͢Δͱ͔ͰͳΜͱ͔Ͱ͖ͳ͍͔
UITableViewDataSource ׂͰ͖·ͤΜ͔ʁ • UITableViewDataSourceׂ͍͢͠ͷͰૣΊʹ ׂ͓ͯ͘͠ • NSObjectstoryboard͔ΒೖͰ͖Δ
UITableViewDataSource ׂͰ͖·ͤΜ͔ʁ • UITableViewDataSourceׂ͍͢͠ͷͰૣΊʹ ׂ͓ͯ͘͠ • NSObjectstoryboard͔ΒೖͰ͖Δ
?ΑΓ! • viewDidLoadprepareForSegueͰॳظԽ͢ΔΑ͏ ͳpropertyOptionalʹ͕ͪ͠ • OptionalΑΓImplicitly Unwrapped Optionalͷ΄͏ ͕͍͍͢ •
Ͳ͏ͤແ͍ͱಈ͔ͳ͍Μ͔ͩΒૣ͘Ϋϥογϡͨ͠ ΄͏͕ಘ
4XJGUؔ࿈
computed property͑·ͤΜ͔ʁ • ఆͦͷΦϒδΣΫτͷঢ়ଶ͔Βࢉग़Ͱ͖ΔΛ ฦ͢ϝιουcomputed propertyʹ • υϝΠϯΛด͡ࠐΊΒΕΔ • ͋ͱ()͕͍Βͳ͘ͳΔͷͰྑ͍
enum͑·ͤΜ͔ʁ • ϓϦϛςΟϒͳઐ༻ͷΦϒδΣΫτͰঢ়ଶΛ ཧ͍͍ͯ͠ͷখֶੜ·Ͱ • UITableViewͷsectionͱ͔(Raw ValuesΛ͏ͱΑ͍) • enumʹด͡ࠐΊΔ •
ྫ͑section headerͷλΠτϧͱ͔ • Associated Valuesߟྀ͢Δ
lazyͰOptionalΛ֎͢ • ࣗͷproperty Aʹґଘ͢Δproperty Bͷ • B͕ඞཁͳͱ͖ʹAଘࡏ͢Δͱ͖ɼBΛlazyʹ͢ Δ͜ͱͰOptionalΛ֎͢͜ͱ͕Ͱ͖Δ
class BookmarkManager { let manager: UserManager init(_ manager: UserManager) {
self.manager = manager } } class ViewController: UIViewController { var userManager: UserManager! var bookmarkManager: BookmarkManager! override func viewDidLoad() { bookmarkManager = BookmarkManager(userManager) } }
class BookmarkManager { let manager: UserManager init(_ manager: UserManager) {
self.manager = manager } } class ViewController: UIViewController { var userManager: UserManager! lazy var bookmarkManager: BookmarkManager = BookmarkManager(self.userManager) }
ςετͰ!ΛΘͳ͍ • ςετ͕ࣦഊ͢ΔΜ͡Όͳͯ͘མͪΔ • CIͰٽ͘ • ࠷ѱͷঢ়ଶ • ͕औಘͰ͖ΔͣͰOptional Chainͱ͔҆શͳ
खஈΛ͏
let bookmark: Bookmark = ... XCTAssertNotNil(bookmark.title, "...") XCTAssertEqual(bookmark.title!, "ؔ ϞόΠϧΞϓϦݚڀձ#2",
"...")
let bookmark: Bookmark = ... XCTAssertNotNil(bookmark.title, "...") XCTAssertEqual(bookmark.title ?? "",
"ؔϞόΠϧΞϓϦݚڀձ#2", "...")
·ͱΊ
• storyboard͍ͯ͠΄͍͠ • View Controllerͱʹ͔͘ଠΒͳ͍Α͏ʹ͢Δ • Swiftͱʹ͔͘࠷ߴ
͋Γ͕ͱ͏͍͟͝·ͨ͠