What are some common methods for array iteration in functional programming?

What are some common methods for array iteration in functional programming?

In functional programming, common methods for array iteration include map, filter, and reduce. Would you like to know how each of these works?

Yes, please explain how the map function works.

The map function creates a new array by applying a provided function to each element of the original array. For example, if you have an array of numbers and want to double each number, you can use map to achieve that.

Can you give me a code example of using map?

Sure! Here's a simple example in JavaScript:

const numbers = [1, 2, 3, 4];
const doubled = numbers.map(num => num * 2);
console.log(doubled); // Output: [2, 4, 6, 8]

What about the filter function?

The filter function creates a new array with all elements that pass the test implemented by the provided function. For instance, if you want to get all even numbers from an array, you can use filter.