react native scrollview map

1  {arr.map((item, index) => 
2    <View style={{height: 50, width: 50, backgroundColor: 'orange', marginBottom: 10}} />
3  )}

1{arr.map((item, index) => {
2  return (
3   <View style={{height: 50, width: 50, backgroundColor: 'orange', marginBottom: 10}} 
4   />
5  )
6})}
7