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Re^3: How to extract certain range of text and display it?

by Anonymous Monk
on Oct 14, 2013 at 01:52 UTC ( #1058115=note: print w/replies, xml ) Need Help??


in reply to Re^2: How to extract certain range of text and display it?
in thread How to extract certain range of text and write into another file?

I can't figure out what variable should I match the section text.

post the new code

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Re^4: How to extract certain range of text and display it?
by annel (Novice) on Oct 14, 2013 at 02:05 UTC
    Here is the code I updated. Please check it. Thanks.
    use warnings; use strict; my $test; my @words; open(INFO,"<","testing.pl")||die"Can't open file:$!\n"; chomp (@words=<INFO>); close(INFO); foreach @words){ if(/^\$ NAME : corry/ .. /\.EON/){ $test=$1; print $test; } }

      well, you're using $1 without using capture groups which moritz told you about , and which perlintro talks about ($1)

      why are you using $1, maybe you want to use $_?

        use warnings; use strict; my $test; my @words; open(INFO,"<","testing.pl")||die"Can't open file:$!\n"; chomp (@words=<INFO>); close(INFO); foreach (@words){ if(/^\$ NAME : corry/ .. /\.EON/){ $test=$_; print $test; } }
        I used $_ but nothing prints out.

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[Corion]: The "and I understand it" part is optional.
[Corion]: ambrus: Yes but I also need to implement the file / IO watcher, because Prima has that (in Prima::File), and I need to supply the appropriate thing to make push_write etc. work with Prima
[ambrus]: Corion: yes, you need to implement the io watcher, which should be simple because Prima::File is basically that, and the timer watcher form Prima::Timer
[Corion]: ... or so I think. As I said, I'm somewhat vague on how to make AnyEvent cooperate with a callback-driven IO event loop that gives me callbacks when data is available or can be written
[ambrus]: what push_write thing? I don't think you need that. that's implemented generically by AnyEvent::Handle
[Corion]: ambrus: Yeah, that's what I think as well. But you give me an idea, maybe I should start with implementing the timer, as that should be far simpler and with fewer edge-cases/nasty interaction than the file watcher
[ambrus]: You only provide the watcher part that tells when the handle is readable or writable, not the actual writing and reading.
[Corion]: ambrus: Hmmm. It makes sense that AnyEvent would implement the push_write itself, but I think I don't have a good idea of where the boundary between AnyEvent and the underlying event system lies... Implementing the timer should give me a better idea
[ambrus]: Corion: push_write is in the higher level abstraction of AnyEvent::Handle, not in the watcher
[Corion]: ambrus: Hmm - rereading Prima::File, that merrily coincides with what Prima does - it tells you "you can read", and you're supposed to read from the fh yourself. I thought it called you with the data already read, which would've been harder to integrate

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