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- Ruby
- Python
- Haskell
- Java
- JavaScript
- C#
- Elixir
- C++
- C
- PHP
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- Go
- Julia (Beta)
- NASM
- Dart
- Racket
- Prolog (Beta)
- Swift
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- Scala
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Start training on this collection. Each time you skip or complete a kata you will be taken to the next kata in the series. Once you cycle through the items in the collection you will revert back to your normal training routine.