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- JavaScript
- CoffeeScript
- Ruby
- Haskell
- Python
- Dart
- Rust
- C++
- Crystal
- C#
- NASM
- C
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- Scala
- Julia (Beta)
- Racket
- Elixir
- TypeScript
- Go
- Prolog (Beta)
- R (Beta)
- CFML (Beta)
- Clojure
- Swift
- COBOL (Beta)
- F#
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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.