Subtle.diff: def of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/src/crypto/subtle.bend as Subtle
Lines 16-22 of bend-collections-laws-crypto@1.0.0.0/src/crypto/subtle.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/src/crypto/subtle.bend&start_line=16&end_line=22

import Base

# OR of the XOR of every pair of positions, over the common prefix.
def diff(a: List<&2, U32>, b: List<&2, U32>, acc: U32) -> U32:
  match a b:
    case x <> xs y <> ys:
      diff(xs, ys, U32.or(acc, U32.xor(x, y)))
    case _ _:
      acc

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.or
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.xor