10.6 Set operations

Function: bbtree-union BBTREE1 BBTREE2

Return a bbtree containing the union of the associations in BBTREE1 and BBTREE2. Where the same key occurs in both: the value in BBTREE1 is preferred.

Function: bbtree-difference BBTREE1 BBTREE2

Return a bbtree containing the all the associations in BBTREE1, which do not occur in BBTREE2.

Function: bbtree-intersection BBTREE1 BBTREE2

Return a bbtree containing all the associations which appear in both BBTREE1 and BBTREE2. The values in BBTREE1 are preferred over those in BBTREE2.

This document describes version 0.5.0-devel.1 of MMCK PFDS.