Update The imprecise nature of the language in this post has muddied the waters. The point of the post was to enumerate some ways of ensuring a single path for cleanup from a conditional clause, not all of them practical. My thanks to the respondents who persevered in spite of the muddiness of the water.

On to the original post...

I need to ensure that a variable is decremented regardless of how an if clause is exited, which might be in the middle of the block. I can code it this way: 

if ( $condition1 ) {{

  ...

  --$loop, last if $condition2;  #bail!

  ...

  --$loop;

}}

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The repeated decrements are not DRY. This one is better: 
if ( $condition1 ) {
  {

    ...

    last if $condition2;

    ...

  }
  --$loop;

}

[download]
Along the way I stumbled upon these monstrosities: 

for ( ; $condition1 ; $loop--, last ) {

   ...

   next if $condition2;

   ...
}

[download]
Even worse: 
while ( $condition1 ) {

  ...

  next if $condition2;

  ...

}

continue {

 --$loop;
 last;

}

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A last in a continue? Who knew?

In reply to at continue, last by djerius

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