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| Perl: the Markov chain saw | |
| PerlMonks |
Re^2: Quantitative Change instead of Booleanby ikegami (Patriarch) |
| on Jun 29, 2006 at 07:10 UTC ( [id://558237]=note: print w/replies, xml ) | Need Help?? |
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He always removes the ads before using MD5. If the only difference between the page and its previously downloaded version are the ads, the MD5 digest will match. The pages aren't being compared; the pages without the ads are being compared.
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Seekers of Perl Wisdom
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