How much is ten times a microsecond? There's no way the user could
detect that kind of latency in a console app. If you're worried about
startup time, then the code of the actual task isn't really relevant.
On Apr 19, 12:08 am, Michael Golovanov <mike.golova...@gmail.com>
wrote:
> Hi everyone
>
> I have the same task implementation on Java and Clojure. Task is very
> simple: User input integers to the console. Program need print inputed
> integers until user input is 42.
> Clojure implementation is 10 times slower, how to optimize Clojure
> implementation performance?
>
> Java impl:
>
> import java.util.Scanner;
>
> public class Main {
> public static void main(String[] args) {
> Scanner sc = new Scanner(System.in);
> do {
> int num = sc.nextInt();
> if (num == 42)
> break;
> System.out.println(num);
> } while( true );
> }
> }
>
> Clojure impl:
>
> (import java.util.Scanner)
>
> (defn getNextInt [scanner term f x]
> (if (not= x nil)
> (apply f [x]))
>
> (let [val (. scanner nextInt)]
> (if (not= val term)
> (getNextInt scanner term f val))))
>
> (getNextInt (Scanner. System/in) 42 (fn [x] (println x)) nil)
>
> Thanx
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