Note that undef (Which many people try first) is the wrong answer. It only sets the value associated with a key to undef. That is usually not what you want: 
my %hash = ('one' => 'two', 'two' => '2');
undef $hash{'one'};
print keys %hash;

[download]
This prints: twoone. Adding: print values %hash; prints: 2.

In reply to Re: How do I completely remove a key/value pair from my hash? by chromatic
in thread How do I completely remove a key/value pair from my hash? by vroom

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