What are the use cases of variadic functions?

What are the use cases of variadic functions?

Variadic functions allow you to pass a variable number of arguments to a function. They're useful in scenarios like logging, where you might want to log different numbers of messages.

Can you give me an example of a variadic function in JavaScript?

Sure! In JavaScript, you can use the ... syntax. For example:

function sum(...numbers) {
    return numbers.reduce((acc, curr) => acc + curr, 0);
}

This function can take any number of arguments and return their sum.

What are the advantages of using variadic functions?

They provide flexibility, allowing functions to handle different numbers of arguments without overloading. This can simplify code and improve readability.

Are there any downsides to using them?

Yes, they can lead to performance issues if not used carefully, and they may make the function's behavior less predictable if the arguments are not properly validated.