11 First-class functions: Part 2
In this chapter
- Learn more applications of replace body with callback.
- Understand how returning functions from functions can give functions superpowers.
- Get lots of practice writing higher-order functions to sharpen your skills.
In the last chapter, we learned skills for creating higher-order functions. This chapter will deepen the learning as we apply those skills to more examples. We start by codifying our copy-on-write discipline. We then improve the logging system so it’s not as much work.
One code smell and two refactorings
In the last chapter, we learned a code smell and two refactorings that help us ...
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