3b3888e9be
Turns
π a,b,c(A) ∪ π a,b,c(B)
into
π a,b,c(A ∪ B)
if A and B are union compatible
Works with union, intersection and difference.
9 lines
76 B
Plaintext
9 lines
76 B
Plaintext
name,skill
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jack,C
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eve,Perl
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duncan,Perl
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duncan,C
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john,C
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alia,C
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eve,C
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