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Redis CE 8.2 supports new operations often required with BITOP command;
DIFF(X, Y1, Y2, …) members of X that are not members of any of Y1, Y2 ,… X ∧ ¬(Y1 ∨ Y2 ∨ …)
DIFF1(X, Y1, Y2, …) members of one or more of Y1, Y2 ,… that are not members of X ¬X ∧ (Y1 ∨ Y2 ∨ …)
ANDOR(X, Y1, Y2, …) members of X that are also members of one or more of Y1, Y2 ,… X ∧ (Y1 ∨ Y2 ∨ …)
ONE(X1, X2, …) - members of exactly one of X1, X2, … For two bitmaps this is equivalent to XOR(X1, X2) (AKA symmetric difference., X1 ⊕ X2). However, for more than two bitmaps, XOR has little practical use. In general this is COUNT(X1, X2, …) == 1