Debugging your code

Along your journey of building applications and libraries in Clojure, you'll surely run into situations where it would be helpful to debug your code. The usual response to such a situation is to use an Integrated Development Environment (IDE) with a debugger. And while Clojure IDEs such as CIDER (https://github.com/clojure-emacs/cider) and Counterclockwise (http://doc.ccw-ide.org) do support debugging, there are a few simpler constructs and tools that we can use to troubleshoot our code. Let's have a look at a few of them.

One of the easiest ways to debug your code is by printing the value of some variables used within a function. We could use the standard println function for this purpose, but it doesn't always produce the most readable output for complex data types. As a convention, we should use the clojure.pprint/pprint function to print variables to the console. This function is the standard pretty-printer of the Clojure language.

Note

Macros can be...