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Re: Is it a list or a flip-flop?

by Paladin (Priest)
on Aug 18, 2005 at 19:09 UTC ( #484936=note: print w/replies, xml ) Need Help??


in reply to Is it a list or a flip-flop?

You are using the .. operator in scalar context. When you do this, and have a number at one end, it compares that number to $. (the current line of the selected file handle, usually used in a while (<FH>) {} loop. Since you aren't reading a file, $. is uninitialized at this point.

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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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