In this chapter, we dived into the world of different patterns that are commonly found in modern JavaScript, such as iterators, generators, useful reduce use cases, selectors, and function composition.
You have also learnt a handful of functions from the Ramda library. Ramda deserves much more attention than a few pages of simple use cases. Please have a look at it in your free time.
In the next chapter, we will use what we have learned here to look at functional programming and its benefits.