What are the rest and spread operators in ES6?

Can you explain the rest and spread operators in ES6?

Sure! The rest operator allows you to represent an indefinite number of arguments as an array, while the spread operator expands an iterable into more elements.

Can you give me an example of how to use the rest operator?

Of course! Here's an example: function sum(...numbers) { return numbers.reduce((acc, num) => acc + num, 0); } This function takes any number of arguments and returns their sum.

And how about the spread operator?

The spread operator can be used like this: const arr1 = [1, 2]; const arr2 = [3, 4]; const combined = [...arr1, ...arr2]; This combines both arrays into one.

Are there any differences in how they are used?

Yes, the rest operator is used in function parameters to collect arguments, while the spread operator is used to expand elements in arrays or objects.