Greetings, oh wise ones. I need to create a hash to process several million records (am building competitor to Google (yes, I am a dreamer)). I need to process something like this: file FOO contains single-field records of fruits and vegetables, and file BAR contains the arrays. 
$cat foo
apple
apple
pear
pear
zucchini
zucchini
eggplant
eggplant
potato
potato

$cat bar
#!/usr/bin/perl
$map{'apple'} = 'fruit';
$map{'pear'} = 'fruit';
$map{'zucchini'} = 'vegetable';
$map{'eggplant'} = 'vegetable';
$map{'potato'} = 'vegetable';

open FILE, "foo" or die$!;
my @lines = <FILE>;

while (my $line = <FILE>)
{
chomp;
print "$map($_)\n";

[download]
Why does this give me nothing? I want to see this: 
apple fruit
apple fruit
pear fruit
pear fruit
zucchini vegetable
zucchini vegetable
zucchini vegetable
eggplant vegetable
eggplant vegetable
eggplant vegetable
potato vegetable
potato vegetable

[download]
Thank you so much. Your humble servant, RickyD

In reply to big job, starting with little script by rdettwyler

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