Install Leiningen and create your first app
Clojure is a dynamic, general-purpose programming language, combining the approachability and interactive development of a scripting language with an efficient and robust infrastructure for multithreaded programming.
As these folks are saying on their website: If you come from the Java world, Leiningen could be thought of as “Maven meets Ant without the pain”. For Ruby and Python folks, Leiningen combines RubyGems/Bundler/Rake and pip/Fabric in a single tool.
Basically is a dependency management tool with built in capabilities to build the Clojure project and to generate Clojure apps from templates.
brew install leiningen
If you have a different distro or a different operating system, go to Leiningen’s instalation instructions and you should find instructions on how to do it.
Pedestal is a set of libraries that we use to build services and applications. It runs in the back end and can serve up whole HTML pages or handle API requests.
First Clojure project
Create a new web API from a template
lein new pedestal-service pedestal-api
Go to the new location and tell Leiningen to download and install all the dependencies for the project
cd pedestal-api lein deps
Run the application using Leiningen
Navigate to http://localhost:8080 and you should get the very popular greeting “Hello world”.
Grab a drink to celebrate
Done, you have a running web API using Clojure, Pedestal and Leiningen.