HashirHussain

/*
  Arrow functions are a shorthand for anonymous functions in JavaScript.
  Unlike function, arrows share the same lexical `this` as their surroundings bodies.
*/

//Expression bodies
var result = items.map(v => v + 1);
var result = items.map((v, i) => v + i);
var result = items.map((v, i) => ({item: v, key: i}));