A fun way to learn more about

Welcome to Scala Puzzlers, the collection of Traps, Pitfalls and Corner Cases in the Scala language.

Prepare to be surprised, entertained and...well, puzzled!
What is presented here is a selection of seemingly simple examples which demonstrate that there's plenty of head-scratching left in Scala.
Let your mind be challenged by unexpected and non-intuitive behaviour and results and learn something in the process.

What is a puzzler? It should be:

an intentional language feature (so no bugs)
not just weird because the reader doesn't know Scala
"surprising" or "non-intuitive" to a reasonably skilled Scala developer

Choose a puzzler from the left-hand list to get started!

Get the book!

In-depth explanations, workarounds and more...

Your contributions are welcomed

Scala Puzzlers is a community effort! Have a puzzler you would like to share with the rest of the Scala community? Please follow these instructions to submit your puzzler. And don't worry, you will be properly credited for your contribution!

We would love to hear from you

Any kind of feedback is appreciated, about the website but also about the puzzlers themselves. If there is something you would like to let us know, please contact us.