Hi. my problem is simple but i couldnt find the answer since im a newbie. I have created a hash of hashes. Something like this. 
%a = {} ;
$a{"KEY1"}->{"VALUE1"}->{key} = value11 ;
$a{"KEY1"}->{"VALUE2"}->{key} = value21 ;

$a{"KEY2"}->{"VALUE1"}->{key} = value11 ;
$a{"KEY2"}->{"VALUE2"}->{key} = value21 ;

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So u see, there is a hash, whose keys have values that each point to another hash. Basically im storing some network data which is initially indexed by the source MAC address and for each source MAC address i have several destination MAC addresses. and then for each of these source destination pairs i have some key value pairs like numBytesTransferred, numRetries etc.

The problem
------------
1. foreach $source (keys %allData)
2. {
3.    foreach $dest ( keys $allData{$source} )
4.    {
5.        #access the values
6.    }
7. }

[download]

Line 3 has an error that says "Type of arg 1 to keys must be hash (not hash element) at file.pl.."

Please help ! or suggest some alternative better way to organize the data that I have talked abt above. Thanks in advance.

MJ

In reply to Simple Anon Hash Query by murtu_4u

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