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full_compare \@ARR1, \@ARR2

Do a full comparison between two arrays.

Checks each individual column. In scalar context returns the number of
+ columns that differ (zero if the arrays are the same). In list conte
+xt returns an list containing the indexes of the columns that differ 
+(an empty list if the arrays are the same).

foreach my $i (@differences) {
  print "$array1[$i] is not equal to $array2[$i]\n";
}