How do map, filter, and forEach compare in performance?

How do map, filter, and forEach compare in performance?

The performance of map, filter, and forEach can vary based on the use case. Generally, map and filter create new arrays, while forEach does not. This can affect memory usage and speed.

Can you give me an example of when to use each?

Sure! Use map when you need to transform data, filter when you want to select specific items, and forEach for executing a function on each item without needing a new array.

Which one is faster?

In terms of speed, forEach is usually the fastest since it doesn't create a new array. However, the difference can be negligible for small datasets.

Are there any scenarios where one is significantly better than the others?

Yes, if you need to transform data, map is best. For filtering, use filter. For side effects without needing a return value, forEach is ideal.