Dear perl -gurus, i am new to perl, it's been so much fun with perl but i hit a roadblock trying to make my programs a little more advanced. This example from the Cookbook has left me confused for two days and giving me a headache.

What is going on in the line 

push (@{$ttys{$user}}, $tty );

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I just cant get my head around, what is going on there ..does it fit a hash-key inside of an array index?.. I also dont understand why you would ever do that. I must have a fundamental misunderstanding going. Sorry .. Can anyone help me? 

my %ttys = ();

open(WHO, "who|");

while (<WHO>)
{
($user, $tty) = split;
push (@{$ttys{$user}}, $tty ); <--- WHAT ???
}

foreach $user (sort keys %ttys)
{
print "$user: @{$ttys{$user}}\n";
}

[download]

In reply to Help wanted .. cant get my head around array of hash by theantler

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