def rv.go
import emerging-ezaudio@0.4.0.0/src/mp3_enc.bend as Mp3Encimport Base
836def rv.go(xs: List<&2, U32>, acc: List<&2, U32>, +n: U32) -> Rv:
837 match xs:
838 case Nil{}:
839 Rv{acc, n}
840 case +hd <> tl:
841 rv.go(tl, hd <> acc, (n + 1 : U32))