When should I use reduce instead of map?

When should I use reduce instead of map?

You should use reduce when you want to transform an array into a single value, while map is for transforming each element.

Can you give me an example of using reduce?

Sure! If you have an array of numbers and want to sum them, you can use reduce like this: array.reduce((acc, curr) => acc + curr, 0);.

What about using map? Can you show me that?

Absolutely! If you want to double each number in an array, you would use map like this: array.map(num => num * 2);.

So, reduce is for single values and map is for arrays?

Exactly! Use reduce for aggregating values and map for transforming each element in an array.