SPUG: Slice of HashOfHash

[Eric.D.Peterson at alltel.com]

Given a Hash of a Hash is it possible to make a slice (I presume this
will be another hash) of a subset of the HoH based upon a value, not the
key?  For example:

my %HoH = (
    flintstones => 
    {
        husband   => "fred",
        pal       => "barney",
    },
    jetsons => 
    {
        husband   => "george",
        wife      => "jane",
        "his boy" => "elroy",  # Key quotes needed.
    },
    jones => 
    {
        husband   => "fred",
        wife       => "linda",
    },
    simpsons => 
    {
        husband   => "homer",
        wife      => "marge",
        kid       => "bart",
    }
);


How can I make a new hash  or loop through this HoH where husband =
"fred"?  

I've been reading up on slices and printing hashes, but I can't seem to
find an example or description on playing with HoH subsets.  I've tried
looping through the full HoH and adding those desired elements to a new
HoH but that seems awkward and not quite right & cumbersome.  So I
thought I'd ask ya'll for some help.


Cheers
Eric




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