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Re^2: Byte ranges of binary files

by PearlsOfWisdom (Initiate)
on Jul 27, 2013 at 15:17 UTC ( #1046658=note: print w/replies, xml ) Need Help??

in reply to Re: Byte ranges of binary files
in thread Byte ranges of binary files

The idea in my brain was that $myRange = the range of bytes required, and $readSz = the buffer size. But maybe that got lost in translation into Perl ?

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Re^3: Byte ranges of binary files
by BrowserUk (Pope) on Jul 27, 2013 at 15:59 UTC

    You could try something like:

    use constant READSIZE => ...; my $fh = ...; my $start = ...; my $end = ...; ## check $end < -s($fh)! seek $fh, $start, 0; while( ($_ = tell( $fh ) ) < $end ) { local $/ = \min( READSIZE, $end - $_ ); my $chunk = <$fh> or die $!; ## ... }

    With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
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[erix]: I'm not sure. I suppose you could compare behavior via DBD::Pg with behaviour of the naked SQL
[erix]: I mean, SQL with PREPARE
[choroba]: hmm... ok, will try
[choroba]: the documentation of PREPARE doesn't mention transactions at all :-/

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