Swift Tip: Quick Performance Timing

gistfile1.txt

@discardableResult
func measure<A>(name: String = "", _ block: () -> A) -> A {
    let startTime = CACurrentMediaTime()
    let result = block()
    let timeElapsed = CACurrentMediaTime() - startTime
    print("Time: \(name) - \(timeElapsed)")
    return result
}

let result = measure { (0..<1_000_000).reduce(0, +) }