def walk.go
import emerging-ezaudio@0.4.0.0/src/wav.bend as Wavimport Base
345def walk.go(xs: List<&2, U32>, st: St) -> Maybe<&2, Wav>:
346 match xs:
347 case Nil{}:
348 st.done(st)
349 case +hd <> tl:
350 walk.go(tl, step.byte(st, hd))