Some other alternatives not yet mentioned:

while (not $error and $a < $b) {
   $a++;
}

[download]

and

do { while ($a < $b) {
   $a++;
} } if (not $error);

[download]

and

do {
   $a++ while ($a < $b);
} if (not $error);

[download]

In reply to Re: backwards if and while looping by ikegami
in thread backwards if and while looping by jcpunk

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