Dear Monks,

I am struggling with finding the cause of my code's strange output.

I am trying to find a list of words and count their frequency in a text file given through STDIN. So far, I hoped that the code would print the hash's key/value pairs that matched my array's elements.

It appears to output some key/values and not others using a logic I can't follow. I'm sure I'm commiting a common mistake for this bread-and-butter Perl problem.

Anonymous Newbie 

#!/usr/bin/perl -w

use strict;

my %histogram;
my @wordstofind = qw(
a am an and are as at be been but by can co de do due each 
); #Many more words snipped 

while (<STDIN>) {
        my @currentline = split;
        $histogram{$_}++ for @currentline;
}

foreach my $i (@wordstofind) {
        while ( my ($key, $value) = each (%histogram) ) {
                if ($key =~ /$i/) {
                        print "Found $key, $value times\n";
                }
        }

}

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In reply to 'Simple' comparing a hash with an array by Anonymous Monk

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