Faster array map and forEach

[dvd101x]

Hi,

This is a way to increase performance of map and forEach when iterating over arrays. The main improvement in speed is by cloning the index only for the callback. Includes an argument called skip index that avoids the costly iteration over an index.

Implements a naive skip zeros in collection.

[josdejong]

That looks great 😎 . I'll review the code next week, it looks good at first sight.

[dvd101x]

Later on I want to try using for loops, instead of array.map and array.forEach. Similar to #3395

Would you recommend doing it here or testing afterwards in a different PR to compare performance?

[dvd101x]

The change to for had a noticeable improvement so I included it in this PR.

[josdejong]

Very nice! Good idea to utilize the knowledge about not needing to provide the index in the callback!

[josdejong]

Published now in v14.3.0