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Hello World
Hello World

Hello World

Tutorial Exercise

Introduction

“Hello, World!” will get you writing some Clojure and familiarize yourself with the Exercism workflow. Completing it unlocks the rest of the Clojure Track.

Watch our "Introduction to Hello, World" video to get started 👇

Instructions

The classical introductory exercise. Just say "Hello, World!".

"Hello, World!" is the traditional first program for beginning programming in a new language or environment.

The objectives are simple:

  • Write a function that returns the string "Hello, World!".
  • Run the test suite and make sure that it succeeds.
  • Submit your solution and check it at the website.

If everything goes well, you will be ready to fetch your first real exercise.

Project Structure

Clojure exercises in exercism support the two most common tools for dependency management and testing, leiningen and the Clojure CLI.

You will find a test file named hello_world_test.clj inside test directory. Write your code in src/hello_world.clj. It should use the namespace hello-world so that tests can pick it up.

Running tests using the Clojure CLI

$ clj -X:test

Running tests using Leiningen

$ lein test

lein test hello-world-test

Ran 3 tests containing 3 assertions.
0 failures, 0 errors.

Then submit the exercise using:

$ exercism submit src/hello_world.clj

For more detailed instructions and learning resources refer exercism's clojure language page.

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Clojure Exercism

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