Functional JavaScript: Building data structures from functions

In the past two columns, we’ve looked at higher-order functions and talked a little bit about the power of functional programming. So far, the concepts we’ve covered do little to indicate how powerful the basic building blocks of functional programming are when combined. In this post, we’ll examine how functions alone can be used as data and data structures. This may sound strange, but you’ll soon see what I mean.

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from InfoWorld http://bit.ly/2VDjfEA