Scan.insert.at: def of yaml-for-bend@0.1.1.0
Import: import yaml-for-bend@0.1.1.0/scan.bend as Scan
Lines 585-594 of yaml-for-bend@0.1.1.0/scan.bend: https://jend.leeeet.dev/read.txt?path=yaml-for-bend@0.1.1.0/scan.bend&start_line=585&end_line=594

import Base
import yaml-for-bend@0.1.1.0/token.bend as T

def insert.at(d: Nat, out: List<&2, T.Token>, t: T.Token) -> List<&2, T.Token>:
  match d:
    case 0n:
      t <> out
    case 1n+k:
      match out:
        case Nil{}:
          [t]
        case Con{h, rest}:
          h <> insert.at(k, rest, t)

Uses (3):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=yaml-for-bend@0.1.1.0/token.bend&name=Token