Wav.open.riff: def of emerging-ezaudio@0.4.0.0
Import: import emerging-ezaudio@0.4.0.0/src/wav.bend as Wav
Lines 359-366 of emerging-ezaudio@0.4.0.0/src/wav.bend: https://jend.leeeet.dev/read.txt?path=emerging-ezaudio@0.4.0.0/src/wav.bend&start_line=359&end_line=366

import Base

def open.riff(xs: List<&2, U32>) -> Maybe<&2, List<&2, U32>>:
  match xs:
    case +a <> +b <> +c <> +d <> +s0 <> +s1 <> +s2 <> +s3 <> +w0 <> +w1 <> +w2 <> +w3 <> rest:
      open.ok(
        U32.is_eq(be.u32(a, b, c, d), tag.riff()) && U32.is_eq(be.u32(w0, w1, w2, w3), tag.wave()),
        rest)
    case _:
      None{}

Uses (9):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.and
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.is_eq
  https://jend.leeeet.dev/definition.txt?path=emerging-ezaudio@0.4.0.0/src/wav.bend&name=be.u32
  https://jend.leeeet.dev/definition.txt?path=emerging-ezaudio@0.4.0.0/src/wav.bend&name=open.ok
  https://jend.leeeet.dev/definition.txt?path=emerging-ezaudio@0.4.0.0/src/wav.bend&name=tag.riff
  https://jend.leeeet.dev/definition.txt?path=emerging-ezaudio@0.4.0.0/src/wav.bend&name=tag.wave