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- Ruby
- JavaScript
- CoffeeScript
- Haskell
- Python
- C#
- PHP
- C++
- NASM
- Nim (Beta)
- Scala
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- COBOL (Beta)
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- Lua
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- Java
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- D (Beta)
- Groovy
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- Go
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- Racket
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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.