I happened to use a Good Goto (TM) today, which is funny, because just a week ago I posted in this journal my impressions of some chapter of “Code Complete” that spoke exactly about gotos that are allowable.

The goto points to special condition code. Something like this -

sub foo
{
  ...
  goto undefined_behavior if (something_bad1)
  ...
  ...
  goto undefined_behavior if (something_bad2)
  ...
  ... etc
  ...

  return

undefined_behavior
  do stuff...
  return
}

Some of the conditions depend on earlier ones’ being good, so trying to make it w/o a goto would be a bloody mess of if..elsif . With goto, the code looks clean and easy to understand.

Cool !

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This entry was posted on Tuesday, June 3rd, 2003 at 3:03 pm and is filed under Perl. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.