Answers for "react native flatlist use index as key"

how to use flatlist keyextractor

<FlatList 
  data={[{name: 'a'}, {name: 'b'}]} 
  renderItem={
    ({item}) => <Text>{item.name}</Text>
  } 
  keyExtractor={(item, index) => index.toString()}
/>

react native flatlist use index as key

keyExtractor={(item, index) => index.toString()}