Take a look at Data::Rmap. Something like this should do the trick. 

use Data::Rmap qw[ rmap_hash ];

rmap_hash{
    for my $key ( keys %{ $_ } ) {
        next unless $key eq 'Target key value';
        $_->{ $key } =~ $someRegex;
    }       
} $refToArbitraryStructure;

[download]

Whether that is an easier than what you have is your decision. More efficient? Benchmark it :)

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
Lingua non convalesco, consenesco et abolesco. -- Rule 1 has a caveat! -- Who broke the cabal?
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re: DataStructure::RecursivelyTransform? by BrowserUk
in thread DataStructure::RecursivelyTransform? by bduggan

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