May 2018
Beginner to intermediate
290 pages
6h 43m
English
Content preview from Getting ClojureBecome 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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Record Confusion
If you’re coming to Clojure from an object-oriented language, then this record and protocol talk probably rings a very familiar bell. Record types and their instances do look a lot like the classes and objects that you find in object-oriented languages. And protocols clearly resemble the abstract types or interfaces that you also find in the object-oriented world. None of this is by chance. Records are Clojure’s approach to building a structured, composite data type with predefined fields. Similarly, protocols are Clojure’s riff on type-based polymorphism—the idea that you can have a single operation implemented in different ways by different types.
But record types and values part company with object-oriented classes and objects ...
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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.