June 2016
Beginner to intermediate
272 pages
8h 21m
English
Content preview from Functional Programming in JavaScriptBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 7. Functional optimizations
This chapter covers
- Indicating where functional code is performant
- Examining the internals of JavaScript function execution
- Implications of nesting function contexts and recursion
- Optimizing function evaluation with lazy evaluation
- Speeding up program execution with memoization
- Unwinding recursive calls with tail recursive functions
We should forget about small efficiencies, say about 97% of the time ... premature optimization is the root of all evil. Yet we should not pass up our opportunities in that critical 3%.
Donald Knuth, The Art of Computer Programming
Always optimize last, or so they say. In previous chapters, you learned how to write and test your functional code; and now, nearing the end of ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.