Underscore and Lodash

You must be the kind of [person] who can get things done. But to get things done, you must love the doing, not the secondary consequences.

—Ayn Rand

JavaScript is a pragmatic utility language, useful in no small part because of its simple APIs and sparse type system. It is an easy language to learn and master because its surface area is so small. And while this characteristic lends itself nicely to productivity, sadly it means that JavaScript types have historically lacked advanced features that would make the language stronger, such as functional iteration constructs native to collections and hashes.

To fill ...

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