Developear - Speeding Up Compile Times of Swift Projects
There are a couple of long-winded articles around about how to do this specific technique, however I have not seen anything quick and to the point. The first thing you are going to want to do is turn on Whole Module Optimization in Debug (by default, it is only on in Release). Here are the optimization settings: Before: After: The next thing you want to do is specify -Onone in Other Swift Flags in
Whole-Module Optimization in Swift 3
Erik Eckstein is member of the Swift team at Apple. He has worked on various aspects of the Swift compiler's optimization pipeline. Whole-module optimization is an optimization mode of the Swift compiler. The performance win of whole-module optimization heavily depends on the project, but it can be up to two or even five times. Whole-module optimization can be enabled with the -whole-module-optimi
Swiftのfinal・private・Whole Module Optimizationを理解しDynamic Dispatchを減らして、パフォーマンスを向上する - Qiita
Swiftのfinal・private・Whole Module Optimizationを理解しDynamic Dispatchを減らして、パフォーマンスを向上するiOS最適化Swiftパフォーマンス 追記(2016/10/23) SE-0117: Allow distinguishing between public access and public overridabilityでpublicの意味が少し変わって、openも登場した関係で、本記事中のコードはSwift 3では少し変更必要そうです。 finalがデフォルトになったので指定不要になった オーバーライド可能にするにはopenを明示が必要になった(これまではデフォルトopen状態だった) デフォルトでDynamic Dispatchが発生しにくくなった感じです。 表面上の書き方は少し変わりましたが、本質は変わりません。 少し
Swift Beta performance: sorting arrays
I was implementing an algorithm in Swift Beta and noticed that the performance was very poor. After digging deeper I realized that one of the bottlenecks was something as simple as sorting arrays. The relevant part is here: let n = 1000000 var x = [Int](repeating: 0, count: n) for i in 0..<n { x[i] = random() } // start clock here let y = sort(x) // stop clock here In C++, a similar operation take
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