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
Swift 周報 4/12
Search
Johnlin
April 12, 2016
Programming
0
90
Swift 周報 4/12
Swift 周報 4/12
Johnlin
April 12, 2016
Tweet
Share
More Decks by Johnlin
See All by Johnlin
用 MLIR 實作 一個 Ruby IR (intermediate representation)
johnlinvc
0
130
Unearth Ruby builtin Gems 發掘 Ruby 的內建 Gems
johnlinvc
0
260
Ruby 型別檢查工具簡介
johnlinvc
0
470
Swift Actor 實作探索
johnlinvc
0
160
用 mruby 來寫跨平台工具
johnlinvc
0
77
Actor model 簡介
johnlinvc
0
190
一起玩 Helm 3
johnlinvc
1
120
為什麼 App 卡卡的
johnlinvc
2
1.2k
如何使用 byebug 來除錯 Ruby 程式
johnlinvc
0
200
Other Decks in Programming
See All in Programming
20250708_JAWS_opscdk
takuyay0ne
2
130
NEWT Backend Evolution
xpromx
1
140
코딩 에이전트 체크리스트: Claude Code ver.
nacyot
0
930
Agentic Coding: The Future of Software Development with Agents
mitsuhiko
0
130
型で語るカタ
irof
0
700
Claude Code + Container Use と Cursor で作る ローカル並列開発環境のススメ / ccc local dev
kaelaela
12
7k
生成AI時代のコンポーネントライブラリの作り方
touyou
1
290
GPUを計算資源として使おう!
primenumber
1
250
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
Rails Frontend Evolution: It Was a Setup All Along
skryukov
0
280
レトロゲームから学ぶ通信技術の歴史
kimkim0106
0
110
マッチングアプリにおけるフリックUIで苦労したこと
yuheiito
0
190
Featured
See All Featured
Performance Is Good for Brains [We Love Speed 2024]
tammyeverts
10
970
Code Review Best Practice
trishagee
69
19k
Put a Button on it: Removing Barriers to Going Fast.
kastner
60
3.9k
Refactoring Trust on Your Teams (GOTO; Chicago 2020)
rmw
34
3.1k
Creating an realtime collaboration tool: Agile Flush - .NET Oxford
marcduiker
30
2.2k
Rails Girls Zürich Keynote
gr2m
95
14k
Stop Working from a Prison Cell
hatefulcrawdad
271
21k
Intergalactic Javascript Robots from Outer Space
tanoku
271
27k
"I'm Feeling Lucky" - Building Great Search Experiences for Today's Users (#IAC19)
danielanewman
229
22k
Cheating the UX When There Is Nothing More to Optimize - PixelPioneers
stephaniewalter
282
13k
A better future with KSS
kneath
238
17k
Save Time (by Creating Custom Rails Generators)
garrettdimon
PRO
31
1.3k
Transcript
Swift पใ 4/12 John Lin @johnlinvc
From the core • inliner ࠷ՂԽᩋࣥߦ䈕େখݮগ
inliner ࠷ՂԽᩋࣥߦ䈕େখݮগ • ࠷ՂԽ inliner ԋࢉ๏ᩋࣥߦ䈕େখݮগ • stdlib: 3% •
Benchmarks_O: 9% • ၷݸେఔࣜ: 15%, 20%
Evolution • SE-0042 ἷฏԽ instance method references తܕผ • SE-0043
ࡏ༗ଟݸpatterns త case label தએࠂᏓ Ꮠ • SE-0044 Import C function ᗣ swift function • SE-0047 ༬ઃܯࠂᔒ༗༻౸తճၚᆴ
ἷฏԽ instance method references తܕผ • ݱࡏ class Foo {
func foo(bar:Int) { print(bar) } } Foo.foo(Foo())(3) // 3 • ະိ Foo.foo(Foo(),3) // 3
ࡏ༗ଟݸpatterns త case label தએࠂᏓᏐ • Լ໘Ҏޙ။ಈ let point =
(2,2) switch point { case let (1,x), let (2,x): //error print(x) default: break }
Import C function ᗣ swift function • ݱࡏimport C function
ޙ။Ꮣglobal function • ະိՄҎࢦఆimport ਐိޙతҐஔɼबੋՄҎࢦఆC function ᗣ init, method, computed property, static property, static computed property ҃ੋ subscript • ༻ __attribute__((swift_name(“SWIFT_NAME")));
Import C function ᗣ swift function // Import as init
struct Point3D createPoint3D(float x, float y, float z) __attribute__((swift_name("Point3D.init(x:y:z:)"))); // Import as method struct Point3D rotatePoint3D(Point3D point, float radians) __attribute__((swift_name("Point3D.rotate(self:radians:)")));
༬ઃܯࠂᔒ༗༻౸తճၚᆴ • ᙛfunc ༗ճၚᆴɼୠੋᔒ༗ඃ༻౸త࣌ީሡ။༬ઃग़ݱܯࠂ func getScore()->Int { return 56 }
var score = 0 getScore() //will raise warning print(score) • ݱࡏ༬ઃෆ။ܯࠂɼ༻@warn_unused_result ՄҎ㗞ੜܯ ࠂɻ • ະိ༬ઃܯࠂɼՄҎ༻@discardableResult ိऔফܯࠂɻ
Evolution • SE-0016 Unsafe[Mutable]Pointer ՄҎ Int • SE-0053 function ჩᏐதෆ࠶ՄҎ༗
let • SE-0054 Abolish ImplicitlyUnwrappedOptional type • SE-0055 ᩋUnsafe Pointer༻Optional ိදࣔ nullability
Unsafe[Mutable]Pointer ՄҎ [U]Int • ՄҎPointer Int ೭ޙ၏֤छӡࢉɻ • ᩋSwift
ՄҎ၏ߋଟతܥ౷ఔࣜ
function ჩᏐதෆ࠶ՄҎ༗ let • function ჩᏐલpass by value ޙੋෆೳվᏓతɼະ ိ။શෆೳࡏჩᏐલ໘ଧ
let/var fun fLet(let a:Int) { print(a) } • ႔ɿະိ argument label ՄҎੋԿ keyword func fc(let l:Int) { print(l) } fc(let: 10)
ᩋUnsafe Pointer༻Optional ိ දࣔ nullability • ݱࡏᔒ༗㭎๏ኺType ग़Pointer ༗ᔒ༗Մೳੋ NULL
• ະိ Pointer ။Ճೖ Optional తޭೳ • if let ptr = nil_ptr { foo(ptr) }