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Method: [outA, ixA, outB, ixB] = antijoin (A, B)

Natural antijoin (AKA “semidifference”).

Computes the anti-join of A and B. The anti-join is defined as all the rows from one input which do not have matching rows in the other input.

Returns: outA - all the rows in A with no matching row in B ixA - the row indexes into A which produced outA outB - all the rows in B with no matching row in A ixB - the row indexes into B which produced outB