def vals.length
import bend-kit-cbor@0.3.0.0/cbor.bend as Cborimport Base
241def vals.length(xs: List<&1, Val>) -> List<&1, Val> & Nat:
242 match xs:
243 case Nil{}:
244 (Nil{}, 0n)
245 case Con{h, t}:
246 vals.length.put(h, vals.length(t))