Hi all, I have a data structure (hash of hashes) that looks like this: 
$VAR = { 'A' => { 
                   'B' => {
                             'C' => {},
                             'D' => {}
                          },
                   'E' => {  
                             'F' => {
                                      'G' => {},
                                      'H' => {}
                                    },
                             'I' => {}
                          }
                 },
          'J' => {
                   'K' => {
                             'L' => {},
                          }
                 }
     }

[download]
I need to turn this into dotted notation.
The following is the representation I am trying to achieve of the structure above: 
A
A.B
A.B.C
A.B.D
A.E
A.E.F
A.E.F.G
A.E.F.H
A.E.I
J.K
J.K.L

[download]
The structure can be arbitrarily deep. Each level can have an arbitrary number of elements.
I have tried a number of recursive solutions but can't seem to get my head wrapped around it.
Any help would be greatly appreciated.

In reply to walking a hash by rjl

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