de.fosd.typechef.featureexpr.bdd
map for caching of already solved SAT checks Different objects A and B of class BDDFeatureExpr may refer to the same internal BDD and have the same hashcode and have equal-equality.
map for caching of already solved SAT checks Different objects A and B of class BDDFeatureExpr may refer to the same internal BDD and have the same hashcode and have equal-equality. If a result was stored for A, this result will also be returned for B, because A.equals(B). We use BDD here, because in contrast to BDDFeatureExpr BDD is never freed by GC and so we avoid redundant SAT checks.