Data in JavaScript is often represented by an array, and so one tends to
manipulate arrays when visualizing or analyzing data. Some common forms of
manipulation include taking a contiguous slice (subset) of an array, filtering
an array using a predicate function, and mapping an array to a parallel set of
values using a transform function.
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Before looking at the set of utilities that this module provides, familiarize
yourself with the powerful array methods built-in to JavaScript.
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Node.js is an event-based server-side JavaScript engine.
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