May 2018
Beginner to intermediate
290 pages
6h 43m
English
Content preview from Getting Clojure
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.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.
Staying Out of Trouble
The irony of picking up a new programming language is that while the goal is to write perfect code, a key skill is to learn how to deal with the myriad of mistakes you’re going to make along the way. To that end, let’s make some mistakes and look at Clojure’s reaction to them.
For example, what happens if we make the classic divide by zero blunder?
| | (/ 100 0) |
What you will see when you divide by zero depends on the environment in which you are executing your Clojure code. You might see a brief
| | ArithmeticException Divide by zero |
| | clojure.lang.Numbers.divide (Numbers.java:156) |
Or you might see this much more extensive message:
| | java.lang.ArithmeticException: Divide by zero |
| | Numbers.java:156 clojure.lang.Numbers.divide ... |
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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.