Instructions

In this exercise you'll be writing code to keep track of a list of programming languages you want to learn on Exercism. You have six tasks, which will all involve dealing with lists.

1. Create a new list

To keep track of the languages you want to learn, you'll need to create a new list. Define the newList constant that contains a new, empty list.

2. Define an existing list

Currently, you have a piece of paper listing the languages you want to learn: Elm, Clojure and Haskell. Define the existingList constant to represent this list.

3. Add a new language to a list

As you explore Exercism and find more interesting languages, you want to add them to your list. Implement the addLanguage function to add a new language to the beginning of your list.

4. Count the languages in the list

Counting the languages manually is inconvenient. Implement the countLanguages function to count the number of languages on your list.

5. Reverse the list

At some point, you realize that your list is actually ordered backwards! Implement the reverseList function to reverse your list.

6. Check if list is exciting

While you love all languages, Elm has a special place in your heart. As such, you're really excited about a list of languages if:

• The first item on the list is Elm.
• Or the second item on the list is Elm and the list contains three or less languages.

Implement the excitingList function to check if a list of languages is exciting: