PROOF.off.lat_app_lt: def of bend-osdev-bytes@0.1.1.0
Import: import bend-osdev-bytes@0.1.1.0/PROOF.bend as PROOF
Lines 996-1005 of bend-osdev-bytes@0.1.1.0/PROOF.bend: https://jend.leeeet.dev/read.txt?path=bend-osdev-bytes@0.1.1.0/PROOF.bend&start_line=996&end_line=1005

import Base
import bend-osdev-bytes@0.1.1.0/bytes.bend as B

def off.lat_app_lt(+i: Nat, a: List<&2, U32>, +b: List<&2, U32>) -> {Nat.is_lt(i, B.len(a)) == True{} : Bool} -> {B.at(B.append(a, b), i) == B.at(a, i) : Maybe<&2, U32>}:
  match i a:
    case 0n Nil{}:
      h => off.no({B.at(b, 0n) == None{} : Maybe<&2, U32>}, h)
    case 1n+p Nil{}:
      h => off.no({B.at(b, 1n+p) == B.at(Nil{}, 1n+p) : Maybe<&2, U32>}, h)
    case 0n Con{x, t}:
      h => {==}
    case 1n+p Con{x, t}:
      h => off.lat_app_lt(p, t, b, h)

Uses (10):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  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=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.is_lt
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.0/PROOF.bend&name=off.no
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.0/bytes.bend&name=append
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.0/bytes.bend&name=at
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.0/bytes.bend&name=len