August 2014
Intermediate to advanced
120 pages
2h 45m
English
Content preview from Mastering Clojure MacrosBecome 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 3Use Your Powers Wisely
Now that you have the knowledge you need about how to write macros, it’s time to start building a great sense for when to write them. Believe it or not, macros do have downsides. In fact, there’s a popular saying in the Clojure world that you should never use a macro when a function will do. In this chapter you’ll see some problems that are inherent to macros, a few outright mistakes to avoid, and some design decisions that can make maintenance harder down the road.
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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.