def fmt.fields
import emerging-ezaudio@0.4.0.0/src/wav.bend as Wavimport Base
117def fmt.fields(ys: List<&2, U32>) -> Maybe<&2, Fm>:
118 match ys:
119 case +k0 <> +k1 <> +c0 <> +c1 <> +r0 <> +r1 <> +r2 <> +r3 <> +b0 <> +b1 <> +b2 <> +b3
120 <> +a0 <> +a1 <> +t0 <> +t1 <> _rest:
121 fmt.pack(k0, k1, c0, c1, r0, r1, r2, r3, b0, b1, b2, b3, a0, a1, t0, t1)
122 case _:
123 None{}