What is the difference between the rest and spread operator?

Can you explain the difference between the rest and spread operators in JavaScript?

Sure! The rest operator collects multiple elements into an array, while the spread operator expands an array into individual elements.

Can you give me an example of the rest operator?

Of course! In a function, you can use the rest operator like this: function sum(...numbers) { return numbers.reduce((a, b) => a + b, 0); }.

And how about the spread operator?

The spread operator can be used to combine arrays. For example: `const arr1 = [1, 2]; const arr2 = [3, 4]; const combined = [...arr1, ...arr2]; // [1, 2, 3, 4]

So, can I use them interchangeably?

Not really! They serve different purposes: rest gathers values, while spread expands them.