object Solution {

  /** 1. Conditional Expression */
  def numerical =
      """
        (...)
      """

  /** 2. Curried `cons` */
  def curriedCons =
      """
        (...)
      """

  /** 3. Recursive Factorial Function */
  def fact =
      """
        (...)
      """

  /** 4. Capture Avoidance */
  def capturing =
      """
        (...)
      """

}