What is the rest operator in ES6?

What is the rest operator in ES6?

The rest operator in ES6 allows you to represent an indefinite number of arguments as an array. It's denoted by three dots (...) before the parameter name.

Can you give me an example of how to use it?

Sure! Here's a simple example:

function sum(...numbers) {
    return numbers.reduce((acc, curr) => acc + curr, 0);
}
console.log(sum(1, 2, 3, 4)); // Output: 10

What are some use cases for the rest operator?

The rest operator is useful for functions that need to accept a variable number of arguments, like in the sum example, or when you want to collect arguments in a single array for further processing.