Get Programming with Scala

41 The library application

In this capstone, you will

• Define an ordered sequence of items using Set
• Add and remove elements to it to track book loans
• Create book instances from a parsed CSV file using Map
• Handle parsing failures using Try
• Validate book loans or returns by providing expressive error messages using Either

In this capstone, you’ll create an application to keep track of books loaned in a library. Each book has a unique ID and can be checked out by only one user at a time but returned by anyone. Each user can take up to 5 books. You need to write the code to read and parse the available books from a CSV file. In particular, you’ll use a publicly accessible data set called “goodbooks-10k” by Zajac Zygmunt. You can find its latest ...