Helper functions to benchmark Swift code execution time

BenchmarkCodeExecution.swift

import UIKit

func printTimeElapsedExecuting(title: String, operation: () -> Void) {
    let startTime = CFAbsoluteTimeGetCurrent()
    operation()
    let timeElapsed = CFAbsoluteTimeGetCurrent() - startTime
    print("Time elapsed for \(title): \(timeElapsed)s.")
}

func timeElapsedInSecondsExecuting(operation: () -> Void) -> Double {
    let startTime = CFAbsoluteTimeGetCurrent()
    operation()
    let timeElapsed = CFAbsoluteTimeGetCurrent() - startTime
    return Double(timeElapsed)
}

printTimeElapsedExecuting(title: "\"(0..<999).map()\"") {
    _ = (0..<999).map { pow(sin(CGFloat($0)), 10.0) }
}