If u want to return the common keys from hashes,use the fallowing sub to pass hash ref as arguments to sub.
@repeat=common(\%a,\%b,\%c);
sub common
{
  my %d;
 for my $href(@_)
  {
    while(my $m=each %$href)
     $d{$m}++;
   }
}
 return grep {$d{$_} ==@_} keys %d
}

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In reply to Re: how can i return the common keys from a hash by perladdict
in thread how can i return the common keys from a hash by Anonymous Monk

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