modifying a hash key value

[Tantalus]

I have a hash myHash which stores several values...
Lets say at runtime there is a key in myHash called 'gleek'. I want to rehash 'gleek' to 'gleek1'. Is there an efficient function to do this? Or must i do something like:

$val = myHash['gleek'];
unset myHash['gleek']
myHash{ 'gleek1' } = $val;

[Weedpacket]

$myhash['gleek1'] = $myhash['gleek'];
$myhash['gleek'] = null;

is shorter. And efficient enough for me (no function-call overhead, for instance).