29.8 DifferenceBlist

DifferenceBlist( blist1, blist2 )

DifferenceBlist returns the asymmetric set difference of the two boolean lists blist1 and blist2, which must have equal length. The asymmetric set difference is a new boolean list such that union[i] = blist1[i] and not blist2[i].

    gap> blist1 := [ true, true, false, false ];;
    gap> blist2 := [ true, false, true, false ];;
    gap> DifferenceBlist( blist1, blist2 );
    [ false, true, false, false ] 

Note that DifferenceBlist is implemented in terms of the procedure SubtractBlist (see SubtractBlist).

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