TaskVarMEPC int typedef int Gecode::ModEvent ModEvent Type for modification events. int typedef int Gecode::PropCond PropCond Type for propagation conditions. const ModEvent const ModEvent Gecode::ME_GEN_FAILED ME_GEN_FAILED = -1 Generic modification event: failed variable. const ModEvent const ModEvent Gecode::ME_GEN_NONE ME_GEN_NONE = 0 Generic modification event: no modification. const ModEvent const ModEvent Gecode::ME_GEN_ASSIGNED ME_GEN_ASSIGNED = 1 Generic modification event: variable is assigned a value. const PropCond const PropCond Gecode::PC_GEN_NONE PC_GEN_NONE = -1 Propagation condition to be ignored (convenience) const PropCond const PropCond Gecode::PC_GEN_ASSIGNED PC_GEN_ASSIGNED = 0 Propagation condition for an assigned variable. Predefined modification events must be taken into account by variable types.