Re: How to club different lines of program into one

[GrandFather]

If you use a hash to record your results you don't need to slurp the file and can generate a little more information. Consider:

use strict;
use warnings;

my %matches = map {$_ => 0} qw(january february egypt);

while (<DATA>) {
    chomp;
    
    ++$matches{$_} if exists $matches{$_};
}

for my $word (sort keys %matches) {
    if (! $matches{$word}) {
        print "Didn't find $word.\n";
    } elsif (1 == $matches{$word}) {
        print "Found $word once.\n";
    } else {
        print "Found $word $matches{$word} times.\n";
    }
}

__DATA__
january
february
january
moon
saturday

Prints:

Didn't find egypt.
Found february once.
Found january 2 times.