Thanks a lot for the advice, Michael; I now got the code to work and am
adding it further below, just for the record.
--On Montag, 24. September 2001 09:07 -0800 Michael Fowler
<[EMAIL PROTECTED]> wrote:
> my %hash = ('0' => 'miller', '1' => '32', '2' => 'copenhagen');
>
> If you're indexing your hash based on number then you should be using an
> array.
I didn't mean to index. There will be numbers used as hash keys which may
or may not be consecutive.
So the hash could also look like this:
my %searchhash = ('2' => 'kowalski', '5' => 56', '10' => 'terranova');
The numbers indicate which position in the line the expression given as
hash value should be on. I only want search results when ALL hash values
match elements of the array (in this case: all three), not if the number of
matches < 3.
The following code now does just that:
use strict;
my (@hits, $key);
my %searchhash = ('0' => 'miller', '1' => '32', '2' => 'copenhagen');
open (FILE, "<test.txt") or die ("can't open: $!");
while (<FILE>) {
chomp;
my $found = 0;
my @line = split /\|/, $_;
foreach my $i (0 .. $#line) {
if ($line[$i] eq $searchhash{$i}) { $found++; }
#when an array element matches the hash value, increment found
#otherwise, move on
if ($found == scalar keys %searchhash) {
#when there are as many matches as hash elements, grab the line, otherwise
just move on
push (@hits, \@line);}
}
}
close (FILE);
foreach my $hit (@hits) {
print "HIT: ", join("|", @$hit), "\n";
}
Birgit Kellner
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