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- Python
- Ruby
- CoffeeScript
- JavaScript
- C#
- TypeScript
- R (Beta)
- PHP
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- C++
- Clojure
- NASM
- Java
- C
- Elixir
- Julia (Beta)
- Rust
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- Racket
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- Dart
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- 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.