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Swift 雙週報 2016/2/23
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Johnlin
February 23, 2016
Programming
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Swift 雙週報 2016/2/23
Johnlin
February 23, 2016
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Transcript
Swift 雙週報 2016/2/23 John Lin @johnlinvc
From the Core - Interactive playground - 可以安裝 Swift Toolchain
到 ~/Library - 漸進式編譯 - Swift Benchmark Suit
Interactive Playground XCode 7.3 beta 3 後支援在playground 裡直接顯示UIViewController(iOS) 或是 NSViewController
(OSX) import XCPlayground XCPlaygroundPage.currentPage.liveView = tableVC
可以安裝 Swift Toolchain 到 ~/Library 在2016/1/25 號之後的Swift Toolchain 可以安裝到~/Library 在安裝的時候選擇Install
for me only 就可以了
漸進式編譯 加快編譯速度10-20%
Swift Benchmark Suite 用來測試和比較不同Swift版本之間的性能 $ ./Benchmark_O --num-iters=1 --num-samples=1
Evolution - SE-0022 使用Swift Function 來建立 Obj-C selector - SE-0028
更像Swift 的Debugging Identifier - SE-0029 移除Function的自動Tuple Splat
SE-0022 使用Swift Function 來建立 Obj-C selector 過去要建立Obj-C selector 只能使用 Selector(“method:arg:”)
現在可以用下面的方法來建立 selector #selector(MyClass.method(_:arg:))
SE-0028 更像Swift 的Debugging Identifier Debug 用的符號將會改名 __FILE__ -> #file __LINE__
-> #line __COLUMN__ -> #column __FUNCTION__ -> #function __DSO_HANDLE__ -> #dsohandle print(__FILE__) # /var/folders/xz/8p5cjp3d1zg7d791vwlcwhcw0000gn/T/lldb/50190/playground43. swift
SE-0029 移除Function的自動Tuple Splat 將會移除下面這個不為人知的Function 用法 func foo(a:Int, b:Int)->Int{return b} let
t = (3,b:2) foo(t) # 2 只能用 foo(t.0, b: t.b) 但不影響沒有 Label 的 function func bar(a:Int, _ b:Int)->Int{return b} let q = (2,2) bar(q)
Community - Hirundo:讓你更容易Track Swift mailing list - swift.pm swift package
清單