link.acute

Link: Object
  .next: nil
  .prev: nil
  .value: nil
  
  init: n
    .value: n
  
  at: idx
    .i: 0
    .element: self clone
    message: (element isNil) doUntil:
      i == idx ifTrue: (return: element)
      .i: i + 1
      .element: element next
    Exception raise: "index #{idx} is out of bounds"
  
  size
    .element: self clone
    .count: 0
    message: (element isNil) doUntil:
      .count: count + 1
      .element: element next
    count