It would help if you could provide enough of the code from the "process_article" function to let us know how the args are being treated. For example, since you are passing references, it's quite possible that some of the contents of your hash are being altered within the subroutine in ways you don't intend.

In any case, as to style, if  $locations{$article} is a reference to a hash, then you should just pass this value to the subroutine -- you don't need to dereference it and put a backslash in front of that to create a reference again. Just do this: 

for my $article ( keys %locations ) {
    process_article( *WFH, $locations{$article}, ... );
}

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In reply to Re: Problem with a hash of hashes by graff
in thread Problem with a hash of hashes by dannoura

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