operators map,filter etc.
JavaScript
var arr3 = ["it's Sunny in", "", "California"];
console.log(arr3.map(x => x.split(" "))); // length 3
console.log(arr3.flatMap(x => x.split(" "))); // length 5
var arr3 = ["it's Sunny in", "", "California"];
console.log(arr3.map(x => x.split(" "))); // length 3
console.log(arr3.flatMap(x => x.split(" "))); // length 5