RosettaCodeData/Task/Symmetric-difference/Pike/symmetric-difference-1.pike

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> multiset(string) A = (< "John", "Serena", "Bob", "Mary", "Bob", "Serena" >);
> multiset(string) B = (< "Jim", "Mary", "Mary", "John", "Bob", "Jim" >);
> A^B;
Result: (< "Bob", "Serena", "Serena", "Mary", "Jim", "Jim" >)