Swift2 smalltalk osxdev
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Transcript of Swift2 smalltalk osxdev
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� �func swift(?)->(!) { return (“version”, 2) }
OSXDEV.org
swift-lang.org
WWDC Swift Panel meetup
https://realm.io/news/apple-wwdc-2015-swift-panel-discussion/
Namespace
Closures
.map.reduceGenerics
inferred typeBridging
Protocol
Initialization
Operators
Strings and Char
Enumerations
Class & Structures
OptionalARC
Currying
App
Per
form
ance
Developer Productivity
CC++
Objective-CJava
RubyPython
JavaScriptGroovyLuaPerl
Improved option sets
Markdown in comments
Objective-C generics Nullability in Objective-C
Faster debug mode
C function pointer APIs
Parallelized WMO
guard
defer
do { }
Synthesized “headers” in Xcode
SIMD supportPattern matching in "if"
Swift 1.2 to 2.0 Migrator @testable
Protocol extensions
Availability checking
Error Handling Model
Multi-payload enums
Recursive nested functions
Faster runtime
Shorter compile time New playgrounds
Mutability warnings
Lisp, Prolog FORTRAN, ALGOLSimula
SmalltalkCObjective-C, C++
JavaPython
C#
Pascal
ErlangHaskell
Scheme
Clojure
Two Paradigms
1950’s
1960’s1970’s
1980’s
1990’s
2000’s
Pure Objective
aPen
+new
+red
+blue
,moveTo:
,draw
,color:
positioncolor
객체구별자 (identifier)Pen:객체
2011년 3월
“Object-oriented programming is eliminated entirely from the introductory curriculum, because it is both anti- modular and anti-parallel by its very nature, and hence unsuitable for a modern CS curriculum. A proposed new course on object-oriented design methodology will be offered at the sophomore level for those students who wish to study this topic.” - Robert Harper, professor at CMU
CMU CS 개론 수업에서 OOP 퇴출
Output
Input
Memory
Variables
Pure Functional
순수한 함수★ 부작용(side-effect)이 없는 함수
★ 변경 불가한 데이터 (Immutability)
★ 참조 투명성 (referential transparency)
★ 게으른 평가 (lazy Evaluation)
★ 타입 클래스 (type class)
★ 고계 함수 (high-order function)
Lisp, Prolog FORTRAN, ALGOLSimula
SmalltalkObjective-C, C++
JavaPython
C#
Kotlin, SwiftRust
Scala
Scheme
F#Ruby
DClojureJulia
JS
1950’s
1960’s1970’s
1980’s
1990’s
2000’s2010’s
Two Paradigms
CPascal
ErlangHaskell
CPU 발전 추세
운영체제
하드웨어
Runtime
Swift App.
Swift App.
Runtime
Obj-C App.
Obj-C App.
Swift vs Objective-C Runtime
Swift Library v1.0✴ libswiftAppKit.dylib* ✴ libswiftCoreGraphics.dylib* ✴ libswiftDarwin.dylib* ✴ libswiftDispatch.dylib* ✴ libswiftFoundation.dylib* ✴ libswiftObjectiveC.dylib* ✴ libswiftSpriteKit.dylib* ✴ libswiftXCTest.dylib* ✴ libswift_runtime.a ✴ libswift_stdlib_core.dylib*
Swift Library v2.0
✴ libswiftAppKit.a ✴ libswiftCoreGraphics.a ✴ libswiftDarwin.a ✴ libswiftDispatch.a ✴ libswiftFoundation.a ✴ libswiftObjectiveC.a ✴ libswiftSpriteKit.a ✴ libswiftXCTest.a ✴ libswift_runtime.a
libswiftAVFoundation.a libswiftCloudKit.a libswiftContacts.a libswiftCore.a libswiftCoreAudio.a libswiftCoreBluetooth.a libswiftCoreData.a libswiftCoreImage.a libswiftCoreLocation.a libswiftCoreMedia.a libswiftEventKit.a libswiftGLKit.a libswiftGameCenter.a libswiftGameplayKit.a libswiftLocalAuthentication.a libswiftMultipeerConnectivity.a libswiftOpenCL.a libswiftSceneKit.a libswiftWebKit.a libswiftsimd.a
Swift OverviewThe Basics
Protocol-Oriented Programming in SwiftSession 408
#WWDC 2015Development Tools
Dave Abrahams | Professor of Bowling-Your-Mind
• Encapsulation• Access Control• Abstraction• Namespace• Expressive Syntax• Extensibility
Classes Are Awesome
Classes Are Awesome
•Encapsulation • Access Control • Abstraction • Namespace • Expressive Syntax • Extensibility
ClassesClassesClassesTypes
I can do allthat with structs
and enums.
Value Type vs. Reference TypeCall by value, Call by reference
Classes That Do Not Contain References
Reference Reference Reference Reference
Point Point Point Point
Array
class Point { var x, y: Float
}
}
for p in array {...
var array: [Point] = ...
var x, y: Float struct Point {
Structs That Do Not Contain References
Array
for p in array {
}...
var array: [Point] = ... Point Point Point Point
}
All reference counting operations eliminated
어떤 언어로 만들까?
TOIBE Index (Dec. 2015)
Swift
아직도 beta 버전?!
OSI-approved license
Later this year
Code contributions accepted
swift.org
github.com/apple
Platform https://swift.org/download/
Core Libraries
✴ swift-corelibs-foundation ✴ http://www.github.com/apple/swift-corelibs-foundation
✴ swift-corelibs-libdispatch ✴ http://www.github.com/apple/swift-corelibs-libdispatch
✴ swift-corelibs-xctest ✴ http://www.github.com/apple/swift-corelibs-xctest
Package Manager✴ Swift-package-manager
✴ https://github.com/apple/swift-package-manager
✴ swift-build
import PackageDescription
let package = Package( name: "Dealer", targets: [], dependencies: [ .Package(url: "https://github.com/apple/example-package-deckofplayingcards.git", majorVersion: 1), ])
https://github.com/apple/swift-llbuild
REPL & Debugger✴ Integrated debugging
✴ LLDB
Community
✴ Communication ✴ Mailing Lists, github, bugs.swift.org
✴ Structure ✴ Project lead, core team, code owner, committer,
contributor
✴ Contributing & Proposing New Features
https://swift.org/community/
