1. longneck@mofa ~ $ cat test.py
2. print 'start'
3. for i in range(50 * 1000 * 1000):
4.     if 1 == 1:
5.         i
6. print 'end'
7. longneck@mofa ~ $ time python test.py
8. start
9. end
10.  
11. real    0m4.108s
12. user    0m3.576s
13. sys     0m0.532s
14. longneck@mofa ~ $ cat test.coffee
15. console.log 'start'
16. for i in [1..50 * 1000 * 1000]
17.     if 1 == 1
18.         i
19. console.log 'end'
20. longneck@mofa ~ $ cat test.js
21. // Generated by CoffeeScript 1.10.0
22. (function() {
23.   var i, j, ref;
24.  
25.   console.log('start');
26.  
27.   for (i = j = 1, ref = 50 * 1000 * 1000; 1 <= ref ? j <= ref : j >= ref; i = 1 <= ref ? ++j : --j) {
28.     if (1 === 1) {
29.       i;
30.     }
31.   }
32.  
33.   console.log('end');
34.  
35. }).call(this);
36. longneck@mofa ~ $ time node test.js
37. start
38. end
39.  
40. real    0m0.294s
41. user    0m0.288s
42. sys     0m0.008s
43. longneck@mofa ~ $