rv2sv scalar deref ck_rvconst ds
av2arylen array length ck_null is
rv2cv subroutine deref ck_rvconst d
-anoncode anonymous subroutine ck_null 0
+anoncode anonymous subroutine ck_anoncode 0
prototype subroutine prototype ck_null s S
refgen reference constructor ck_spair m L
srefgen scalar ref constructor ck_null fs S
each each ck_fun t H
values values ck_fun t H
keys keys ck_fun t H
-delete delete ck_delete s S
-exists exists operator ck_delete is S
+delete delete ck_delete 0 S
+exists exists operator ck_exists is S
rv2hv associative array deref ck_rvconst dt
helem associative array elem ck_null s H S
hslice associative array slice ck_null m H L