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
490
Multiple layout with UITableViewCell
yashigani
1
3.5k
Lazy stored property
yashigani
3
2.2k
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
Go言語の特性を活かした公式MCP SDKの設計
hond0413
1
200
デミカツ切り抜きで面倒くさいことはPythonにやらせよう
aokswork3
0
210
monorepo の Go テストをはやくした〜い!~最小の依存解決への道のり~ / faster-testing-of-monorepos
convto
2
420
Your Perfect Project Setup for Angular @BASTA! 2025 in Mainz
manfredsteyer
PRO
0
140
NetworkXとGNNで学ぶグラフデータ分析入門〜複雑な関係性を解き明かすPythonの力〜
mhrtech
3
1.1k
あなたの知らない「動画広告」の世界 - iOSDC Japan 2025
ukitaka
0
420
複雑化したリポジトリをなんとかした話 pipenvからuvによるモノレポ構成への移行
satoshi256kbyte
1
840
アメ車でサンノゼを走ってきたよ!
s_shimotori
0
200
どの様にAIエージェントと 協業すべきだったのか?
takefumiyoshii
2
620
『毎日の移動』を支えるGoバックエンド内製開発
yutautsugi
2
210
開発生産性を上げるための生成AI活用術
starfish719
1
200
明日から始めるリファクタリング
ryounasso
0
120
Featured
See All Featured
The Straight Up "How To Draw Better" Workshop
denniskardys
237
140k
The MySQL Ecosystem @ GitHub 2015
samlambert
251
13k
No one is an island. Learnings from fostering a developers community.
thoeni
21
3.5k
jQuery: Nuts, Bolts and Bling
dougneiner
64
7.9k
Refactoring Trust on Your Teams (GOTO; Chicago 2020)
rmw
35
3.2k
The Web Performance Landscape in 2024 [PerfNow 2024]
tammyeverts
9
850
4 Signs Your Business is Dying
shpigford
185
22k
Speed Design
sergeychernyshev
32
1.1k
"I'm Feeling Lucky" - Building Great Search Experiences for Today's Users (#IAC19)
danielanewman
229
22k
Being A Developer After 40
akosma
91
590k
YesSQL, Process and Tooling at Scale
rocio
173
14k
Cheating the UX When There Is Nothing More to Optimize - PixelPioneers
stephaniewalter
285
14k
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·ͨ͠