When comparing Learning Scala: Practical Functional Programming for the JVM vs exercism.org, the Slant community recommends exercism.org for most people. In the question“What are the best resources to learn Scala?” exercism.org is ranked 1st while Learning Scala: Practical Functional Programming for the JVM is ranked 11th. The most important reason people chose exercism.org is:
Rather than merely test for code correctness, Exercism uses peer review to improve general programming techniques. Users are encouraged to comment on others' solutions, and refine their own based on feedback.
Specs
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Pros
Pro Great for programmers familiar with other OO languages
This book won't bore you by going over the basics. It's jumps right into Scala, at a pace that's ideal for experienced programmers.
Pro Human review and feedback
Rather than merely test for code correctness, Exercism uses peer review to improve general programming techniques. Users are encouraged to comment on others' solutions, and refine their own based on feedback.
Pro Practice with production tools
Unlike many code practice websites, Exercism requires the user to develop and test entirely offline, submitting only the finished code. This promotes familiarity with essential tools and workflow, not just the bare language.
Cons
Con Prior programming knowledge required
This book is written with experienced programmers in mind, and some of the exercises are quite challenging.
Con Custom commandline client
Exercism requires using a CLI utility to fetch and submit exercises. This is inconvenient compared to web-only alternatives, and poses an additional barrier to entry for some users.