// 기존의 데이터를 원하는 방향으로 수정
// Fruits.vue
<template>
  <section v-if="hasFruit">
    <h1>Fruits</h1>
    <ul>
      <li
        v-for="fruit in fruits"
        :key="fruit">
        {{ fruit }}
      </li>
    </ul>
  </section>
  <section>
    <h1>Reverse Fruits</h1>
    <ul>
      <li
        v-for="fruit in reverseFruits"
        :key="fruit">
        {{ fruit }}
      </li>
    </ul>
  </section>
</template>

<script>
export default {
  data() {
    return {
      fruits: [
        'Apple','Banana','Cherry',
      ]
    }
  },
  computed: {
    hasFruit() {
      return this.fruits.length > 0
    },
    reverseFruits() {
      return this.fruits.map(fruit => {
        return fruit.split('').reverse().join('')
      })
    }
  }
}
</script>

// App.vue
<template>
  <Fruits />
</template>

<script>
import Fruits from '~/components/Fruits'
export default {
  components: {
    Fruits
  },
  data() {
    return {

    }
  }
}
</script>

computed caching

gettet, setter