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
2.2k
Dependency Injection in iOS Apps
yashigani
2
470
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
2.3k
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
Linux && Docker 研修/Linux && Docker training
forrep
23
4.5k
[JAWS-UG横浜 #80] うわっ…今年のServerless アップデート、少なすぎ…?
maroon1st
1
170
AWS Organizations で実現する、 マルチ AWS アカウントのルートユーザー管理からの脱却
atpons
0
130
Grafana Cloudとソラカメ
devoc
0
140
パスキーのすべて ── 導入・UX設計・実装の紹介 / 20250213 パスキー開発者の集い
kuralab
3
670
Software Architecture
hschwentner
6
2.1k
データの整合性を保つ非同期処理アーキテクチャパターン / Async Architecture Patterns
mokuo
41
15k
AIの力でお手軽Chrome拡張機能作り
taiseiue
0
170
SRE、開発、QAが協業して挑んだリリースプロセス改革@SRE Kaigi 2025
nealle
3
4.1k
Spring gRPC について / About Spring gRPC
mackey0225
0
220
Unity Android XR入門
sakutama_11
0
140
DROBEの生成AI活用事例 with AWS
ippey
0
130
Featured
See All Featured
No one is an island. Learnings from fostering a developers community.
thoeni
21
3.1k
Build The Right Thing And Hit Your Dates
maggiecrowley
34
2.5k
The World Runs on Bad Software
bkeepers
PRO
67
11k
A Modern Web Designer's Workflow
chriscoyier
693
190k
Thoughts on Productivity
jonyablonski
69
4.5k
The Straight Up "How To Draw Better" Workshop
denniskardys
232
140k
Side Projects
sachag
452
42k
The Web Performance Landscape in 2024 [PerfNow 2024]
tammyeverts
4
400
[Rails World 2023 - Day 1 Closing Keynote] - The Magic of Rails
eileencodes
33
2.1k
Fontdeck: Realign not Redesign
paulrobertlloyd
82
5.4k
How to train your dragon (web standard)
notwaldorf
90
5.8k
Visualizing Your Data: Incorporating Mongo into Loggly Infrastructure
mongodb
44
9.4k
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·ͨ͠