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 an new list. Define the newList binding 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: F#, Clojure and Haskell. Define the existingList binding 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 one-by-one 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, F# has a special place in your heart. As such, you're really excited about a list of languages if:

• The first on the list is F#.
• The second item on the list is F# and the list contain either two or three languages.

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