Let’s start with the good-old trusty todo list, the “Hello, World” of full programs. You’re going to write a command-line todo list program that meets the following specifications:

• Prompt the user to enter a chore or task. Store the task in a permanent location so that the task persists when the program is restarted.

• Allow the user to enter as many tasks as desired but stop entering tasks by entering a blank task. Do not store the blank task.

• Display all the tasks.

• Allow the user to remove a task, to signify it’s been completed.

Constraints

• Store the data in an external data source.

• If you’re using a server-side language, consider persisting the data to Redis.

• Consider persisting the database to a third-party service like Parse or Firebase.

Challenges

• Implement this in a web browser using only front-end technologies. Investigate using IndexedDB to save the items.

• Implement the front end as an Android or iPhone app, but connect that front end to your own back end that you write using a server-side language. Create your own API for retrieving the list, creating a new item, and marking an item as complete.