Hi gabrielsousa,
List::Compare and Set::Scalar will do this.
The method you want is get_symmetric_difference for List::Compare or symmetric_difference for Set::Scalar.
And the faq that KurtZ referenced.
C:\Old_Data\perlp>perldoc -q "intersection"
Found in C:\Perl64\lib\pods\perlfaq4.pod
How do I compute the difference of two arrays? How do I compute the
+ intersection of two arrays?
Use a hash. Here's code to do both and more. It assumes that each
element is unique in a given array:
@union = @intersection = @difference = ();
%count = ();
foreach $element (@array1, @array2) { $count{$element}++ }
foreach $element (keys %count) {
push @union, $element;
push @{ $count{$element} > 1 ? \@intersection : \@
+difference }, $element;
}
Note that this is the *symmetric difference*, that is, all element
+s in
either A or in B but not in both. Think of it as an xor operation.
C:\Old_Data\perlp>
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