---
ch-1:
  - function: matchingmembers
    arguments:
      - 1
      - 1
      - 4
      - 2
      - 1
      - 3
    result: 3
  - arguments:
      - 5
      - 1
      - 2
      - 3
      - 4
    result: 0
  - arguments:
      - 1
      - 2
      - 3
      - 4
      - 5
    result: 5
ch-2:
  - function: lastmember
    arguments:
      - 2
      - 7
      - 4
      - 1
      - 8
      - 1
    result: 1
  - arguments:
      - 1
    result: 1
  - arguments:
      - 1
      - 1
    result: 0