swift_array_set_function.swift

var comparisonRecords = [(String, Int, Double, Double)]()

let trials = 10
func compareOperations(name: String, repeats: Int, arrayOperation: ()->(), setOperation: ()->()) {
    for trial in 1...trials {
        let arrayStartTime = CFAbsoluteTimeGetCurrent()
        for _ in 1...repeats {
            arrayOperation()
        }
        let arrayTimeInterval = (CFAbsoluteTimeGetCurrent() - arrayStartTime)*1000
        
        let setStartTime = CFAbsoluteTimeGetCurrent()
        for _ in 1...repeats {
            setOperation()
        }
        let setTimeInterval = (CFAbsoluteTimeGetCurrent() - setStartTime)*1000
        
        comparisonRecords.append((name, trial, arrayTimeInterval, setTimeInterval))
    }
}