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<p>Yes. I've learned to test for impossible conditions. They occur
more than I expect. <br>
</p>
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<div class="moz-cite-prefix">On 03/23/2017 08:47 AM, leam hall
wrote:<br>
</div>
<blockquote
cite="mid:CACv9p5rk0pFWfxCGCV5SGTOtHuQc98vKtg1PRNSXcdDKiJhLdg@mail.gmail.com"
type="cite">
<div dir="ltr">I paid an invoice early this morning with PayPal.
Unfortunately I typo'd the zip code and the form reset saying I
needed to re-enter. That's fine, I typed slowly and got it right
the second time.
<div><br>
</div>
<div>However, the application encumbered the full amount both
times, signficantly reducing my PayPal balance. I've contacted
the invoice company and the vendor, so that's not as much of a
problem yet. </div>
<div><br>
</div>
<div>When you code, do so defensively. In this sort of case gas
stations will often debit USD 1 to ensure the transaction is
possible, and then do the rest of it later. Right now the
invoice processor has given me a bad feel for their coding
capabilities. They may be smart, but are they thinking?</div>
<div><br>
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<div>Leam</div>
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