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- JavaScript
- Haskell
- CoffeeScript
- Java
- Python
- Ruby
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- Dart
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- Objective-C (Beta)
- NASM
- C
- COBOL (Beta)
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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.