if (exists($hash->{$cur})) {
    $hash->{$cur}++;
}
else {
    $hash->{$cur} = 1;
}

[download]
No need to jump through hoops. Perl doesn't complain when increasing undefined variables, so this will do: 
$hash->{$cur}++;

[download]
It's the accept practice for this case, in fact, so it should be done this way as well.

Makeshifts last the longest.

In reply to Re^2: Storing unique values by Aristotle
in thread Storing unique values by Anonymous Monk

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