+static const struct variable_ops_t
+void_ops = { NULL, DupDummy, FreeDummy, },
+addr_ops = { CmpAddress, DupDummy, FreeDummy, },
+bool_ops = { CmpBool, DupDummy, FreeDummy, },
+float_ops = { CmpFloat, DupDummy, FreeDummy, },
+int_ops = { CmpInt, DupDummy, FreeDummy, },
+list_ops = { CmpAddress, DupList, FreeList, },
+mutex_ops = { CmpAddress, DupDummy, FreeMutex, },
+string_ops = { CmpString, DupString, FreeString, },
+time_ops = { CmpTime, DupDummy, FreeDummy, },
+coords_ops = { NULL, DupDummy, FreeDummy, };
+