概要 Swiftでも、rubyのBenchmarkのように簡単に処理時間を計算するメソッドを書いた。 このメソッドを使うと、アプリの速度改善に役立つ。 Benchmarkクラス import Foundation class Benchmark { // 開始時刻を保存する変数 var startTime: NSDate var key: String // 処理開始 init(key: String) { self.startTime = NSDate() self.key = key } // 処理終了 func finish() { let elapsed = NSDate().timeIntervalSinceDate(self.startTime) as Double let formatedElapsed = String(format: "%.3f", elapsed) pr
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