| okval(val, st[r0 -- _type] .type .type), ∃ i. sk = i ', validref(str, r, ty, st) ⊦ is_referencevalue(val), validref(str, r, ty, st[r0 -- sk, val]) |
okval(val, st[r0 -- _type] .type .type), validref(str, r, ty, st) ⊦ is_referencevalue(val), validref(str, r, ty, st[r0 -- i ', val])
[[CONCRETESIMPRULES : ()]]