[yaml] 배열 표현

# 배열
fruits:
  - apple
  - banana
  - orange

fruits:
  - name: banana
    calories: 105
    fat_in_grams: 0.3
    carbs_in_grams: 27
  - name: grape
    calories: 62
    fat_in_grams: 0.3
    carbs_in_grams: 16

# yaml 배열은 순서가 의미가 있음

fruits:
  - banana
  - orange
  - apple
  

fruits:
  - apple
  - banana
  - orange