I don't think I understand your problem. In your else block you won't have access to the foo declared in the if (cond1) statement because the code in the if block has never been executed.

Have you declared foo outside the while loop? Or are you looking to do something with an empty array foo? If the latter, try this: 
while (looping over something) {
  my @foo;
  if (cond1) {
    create @foo if a certain condition is met
    do a bunch of things
  } else {
    do something to foo already declared
    do a bunch of other things
  }
}

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In reply to Re: normalizing results from a db query by biosysadmin
in thread normalizing results from a db query by punkish

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