Can you give me real-world examples of map, filter, and reduce?

Can you give me real-world examples of map, filter, and reduce?

Sure! Let's start with the map method. For instance, if you have an array of numbers and you want to double each number, you can use map to create a new array with the doubled values.

That makes sense! What about filter?

Great question! The filter method can be used to find all even numbers in an array. For example, if you have an array of numbers, you can filter it to get only the even ones.

And how does reduce work?

The reduce method is used to accumulate values. For example, if you want to sum all the numbers in an array, you can use reduce to get the total.

Can you give me a code example for each?

Absolutely! Here are some code snippets:

1. map: const doubled = numbers.map(num => num * 2);
2. filter: const evens = numbers.filter(num => num % 2 === 0);
3. reduce: const total = numbers.reduce((acc, num) => acc + num, 0);