title: Perl, convert numerically-keyed hash to array
body: <p>If I have a hash in Perl that contains complete and sequential integer mappings (ie, all keys from from 0 to n are mapped to something, no keys outside of this), is there a means of converting this to an Array?</p>
  
  <p>I know I could iterate over the key/value pairs and place them into a new array, but something tells me there should be a built-in means of doing this.</p>