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Re: Improve perlfaq5: How can I translate tildes (~) in a filename?

by pc88mxer (Vicar)
on Jun 10, 2008 at 19:05 UTC ( #691311=note: print w/replies, xml ) Need Help??

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    [ambrus]: (I haven't found an idle event.)
    [ambrus]: However, I also looked at the internals, and found two interesting things:
    [marto]: stupid xpath question, I have a xpath copied from the browser, is the * wildcard supposed to work for IDs? e.g. '//*[@id="*"]/ div/div/header/p/a '?
    [ambrus]: The main loop for unixish systems is in https://metacpan. org/source/ KARASIK/Prima-1. 49/unix/apc_app.c. It is a hand-rolled select loop, but also always spins at least once every 0.2 seconds for some reason.
    [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.

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