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Re: How does this code work? (from "Perl is Unix")

by targetsmart (Curate)
on Nov 06, 2009 at 05:55 UTC ( #805398=note: print w/replies, xml ) Need Help??


in reply to How does this code work? (from "Perl is Unix")

If you dont understand a block of code, just simplify it to the maximum extent possible. break that complex statement into relevant simpler statements, and try to understand that with help of the occean of documentation that perl has here Perl documentation.


Vivek
-- 'I' am not the body, 'I' am the 'soul', which has no beginning or no end, no attachment or no aversion, nothing to attain or lose.
  • Comment on Re: How does this code work? (from "Perl is Unix")

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[ambrus]: marto: no, not that way. if you just want to test for an existing id attribute, then write *[@id] , or you can match a regexp to the value of that attribute like *[@id=~/something/ ]
[marto]: ambrus, thanks I ended up going with '//*[starts- with(@id, "thread_")]...
[ambrus]: Sometimes it's easier to just match elements in ways other than xpath, like directly with perl code.
[marto]: this is a cheap hack, a script that doesn't need to run for long, using WWW::Mechanize:: Firefox to drive some awful interface.
[marto]: if it were anything more serious I'd spend more time looking into it properly :P

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