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- CoffeeScript
- JavaScript
- Python
- Ruby
- Clojure
- Haskell
- C#
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- Shell
- Swift
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- Julia (Beta)
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- Elixir
- Factor (Beta)
- Rust
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- Perl (Beta)
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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.