Re^2: Parsing log file with blank lines for the field separator

A hash might be nicer:

use strict;
use warnings;

my @strings = ('String A', 'String B', 'String C', 'String D', 'String
+ E');

my %string_handles = map { open my $fh, '>', "$_.log" or die "Couldn't
+ create '$_.log': $!"; $_ => $fh }
    @strings;

open (my $in_fh, '<', 'input.txt') or die "Couldn't open input file!\n
+";

local $/ = '';
while (my $paragraph = <$in_fh>) {
    while (my ($string, $out_fh) = each %string_handles)
    {
        next unless index($paragraph, $string) >= 0;
        print {$out_fh} $paragraph;
    }
}

close $in_fh;
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Re^3: Parsing log file with blank lines for the field separator by JasonJ (Initiate) on May 06, 2008 at 18:19 UTC
chromatic, I was able to use the hash you gave. Works perfectly. Could you please point me to a resource where I can learn more on hashes? I am not sure just what this code does and would like to be able to maintain it going forward. Thanks! Jason	[reply]
Re^4: Parsing log file with blank lines for the field separator by chromatic (Archbishop) on May 06, 2008 at 20:20 UTC
perldoc perldata has a good section on hashes. Think of a hash like a dictionary or a phone book. You look up a word or a name, and you get back a definition or a phone number. With a hash, you use a string as the key (what you put in) and you get back a scalar as the value. In this case, the keys are filenames and the values are filehandles. There's a one-to-one mapping of keys to values.	[reply]