Good Day, This is the first time posting here so not sure if I have all the tags correct, if not sorry in advance, what I am trying to figure out is the correct syntax for a foreach statement with hash var, if it is possible that is. Very shorted code here: 
%dat_mapping = ();
%eng_mapping = ();

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# in two different config files, a hash of arrays are created then slurped into the dat/eng mapping.
#then I start to pull things apart with. 
foreach my $file_name (key (%dat_mapping)) {
    print "blah\n";
}

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#okay here is the problem when working each hash by itself things work, but I was trying to build an anonymous sub where the hash goes such as:
#There is a lot of code with in this foreach statment, so trying not to have to duplicate that code, if the if statment can be reworked that would be great. 
foreach my $file_name (key (sub { if ($hash_name eq 'dat') {
                                       return \%dat_mapping;
                                  } else {
                                       return \%eng_mapping:
                                  }
                                 } ) {

            print "blah\n";
           
          }

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In reply to Hash with sub by ed_r

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