Layout.lookup: def of bendtorch-core@0.1.0.0
Import: import bendtorch-core@0.1.0.0/src/tensor/layout.bend as Layout
Lines 38-45 of bendtorch-core@0.1.0.0/src/tensor/layout.bend: https://jend.leeeet.dev/read.txt?path=bendtorch-core@0.1.0.0/src/tensor/layout.bend&start_line=38&end_line=45

import Base

def lookup(values: List<&2, U32>, index: Nat) -> Maybe<&2, U32>:
  match values index:
    case Nil{} _:
      None{}
    case head <> tail 0n:
      Some{head}
    case head <> tail 1n+p:
      lookup(tail, p)

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=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32