When should I use map or reduce in programming?

Can you explain when to use map or reduce in programming?

Sure! Use map when you want to transform each element in a collection, and reduce when you want to aggregate values.

Can you give me an example of using map?

Absolutely! If you have an array of numbers and want to double each number, you can use map like this: numbers.map(num => num * 2).

What about reduce? Can you show me an example?

Of course! If you want to sum all the numbers in an array, you can use reduce like this: numbers.reduce((acc, num) => acc + num, 0).

Are there any performance considerations between the two?

Yes, generally, map is faster for transformations, while reduce can be more complex and may have performance implications depending on the operation.