Basic set operations?

[Hemanth H.M]

Would it be useful to implement basic set operations as below?

*  merge
*  subset?
*  superset?
*  union
*  intersection
*  complements
*  difference
*  cartesian
*  copy

So on?


-- 
*'I am what I am because of who we all are'*
h3manth.com <http://www.h3manth.com>
*-- Hemanth HM *
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