Um, that seems kinda-sorta-premature, but if you think in terms of map (see map and grep or clear code? ), great , map it up to the max -- were you really after this (your original question)? 

for my $val ( map { values %$_ } values %hoh ){
   ...
}

[download]

This thread reminded me I wanted to read about skimmable code / Skimmable Code & end-of-block comments

In reply to Re^3: Traversing through HoH by Anonymous Monk
in thread Traversing through HoH by snape

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