Analyzing HTML with Perl
Analyzing HTML with Perl Jan 19, 2006 by Kendrew Lau Routine work is all around us every day, no matter if you like it or not. For a teacher on computing subjects, grading assignments can be such work. Certain computing assignments aim at practicing operating skills rather than creativity, especially in elementary courses. Grading this kind of assignment is time-consuming and repetitive, if not te
Lexing Your Data
Lexing Your Data Jan 5, 2006 by Curtis Poe s/(?<!SHOOTING YOURSELF IN THE )FOOT/HEAD/g Most of us have tried at one time or another to use regular expressions to do things we shouldn’t: parsing HTML, obfuscating code, washing dishes, etc. This is what the technical term “showing off” means. I’ve done it too: $html =~ s{ (<a\s(?:[^>](?!href))*href\s*) (&(&[^;]+;)?(?:.(?!\3))+(?:\3)?) ([^>]+>) } {$1
Logic Programming with Perl and Prolog
Logic Programming with Perl and Prolog Dec 15, 2005 by Robert Pratte Computing languages can be addictive; developers sometimes blame themselves for perceived inadequacies, making apologies for them. That is the case, at least, when one defends his or her language of choice against the criticism of another language’s devotee. Regardless, many programmers prefer one language, and typically ground t
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