An async map function

parallelmap is identical to map but each item in the collection will be processed in parallel. Let's take a look at an example:

The content of the given $urls will be fetched at the same time. This will be much faster that fetching the content of one url after the other. Cool stuff!

Here’s an example, again take from their docs, on how you can use the package directly:

Be aware that you shouldn’t use parallelMap if the work done in the closure is very simple. Using parallelMap causes quite some overhead and is memory intensive. Don't use this for small operations or on a large collection.

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