What is the map function in programming?

Can you explain what the map function is in programming?

Sure! The map function is a built-in method in many programming languages that allows you to apply a function to each item in a collection, like an array, and return a new array with the results.

How does it work in JavaScript?

In JavaScript, the map function takes a callback function as an argument. It iterates over each element in the array, applies the callback, and returns a new array with the transformed elements.

Can you give me an example?

Of course! Here's a simple example: const numbers = [1, 2, 3]; const doubled = numbers.map(num => num * 2); This will return [2, 4, 6].

What if I want to filter the results instead?

For filtering, you would use the filter method instead of map. It allows you to return only the elements that meet a certain condition.