Random Negative or Positive

Actionscript:
  1. for (var i:int = 0; i<10; i++){
  2.   // randomly set a variable to -1 or positive 1
  3.   trace(int(Math.random()*2) - 1 | 1);
  4. }
  5.  
  6. /* outputs something like this
  7. 1
  8. 1
  9. -1
  10. 1
  11. -1
  12. -1
  13. 1
  14. 1
  15. -1
  16. -1
  17. */

The past few days I found myself using this one-liner a few times. Just a quick way to randomly get -1 or 1.

I was brainstorming today and wrote a weird/bad inline version of an old post:

var rand:Number = [-3, 2, 1, 1, 1, 0.5][int(Math.random() * 6)];

I need to install a related posts plugin for WordPress - would be nice if this post were related to my old post about Tausworthe random seeds.

Been posting medium/large snippets and snippets the relate to QuickBox2D - so today I figured I'd get back to basics...

This entry was posted in one-liners, random and tagged , , . Bookmark the permalink. Post a comment or leave a trackback: Trackback URL.

2 Comments

  1. Posted June 17, 2010 at 7:49 am | Permalink

    Thank ya sir. Very handy.

  2. Posted November 5, 2010 at 3:03 pm | Permalink

    Cool!
    Merci!

Post a Comment

Your email is never published nor shared. Required fields are marked *

*
*