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- Ruby
- JavaScript
- Python
- Java
- C
- Haskell
- Rust
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- Perl (Beta)
- Raku (Beta)
- Prolog (Beta)
- CFML (Beta)
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- Elixir
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- Dart
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- Clojure
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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.