11 lines
243 B
Text
11 lines
243 B
Text
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A: ?("John";"Bob";"Mary";"Serena")
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B: ?("Jim";"Mary";"John";"Bob")
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A _dvl B / in A but not in B
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"Serena"
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B _dvl A / in B but not in A
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"Jim"
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(A _dvl B;B _dvl A) / Symmetric difference
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("Serena"
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"Jim")
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