Some Katas for functional programming in Java 8 for a coding dojo (loosely based on https://reactive-extensions.github.io/learnrx/ and converted to Java)

Just read the instructions in the Kata and try to finish them. You can also use TDD if you want - there are dummy tests for all Katas.

• Kata 1: simple projection using map
• Kata 2: filter() and map()
• Kata 3: using map() and flattening the array using flatMap()
• Kata 4: a simple query using map(), filter() and flatMap()
• Kata 5: simple example using reduce()
• Kata 6: map() and reduce() combined
• Kata 7: more advanced queryin
• Kata 8: combining collections using zip()
• Kata 9: Complex Query
• Kata 10: Transforming a data structure
• Kata 11: Transforming a more complex data structure