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- JavaScript
- CoffeeScript
- Ruby
- Python
- Haskell
- C#
- PHP
- TypeScript
- Swift
- C++
- R (Beta)
- Nim (Beta)
- Go
- Elixir
- Lua
- Scala
- Clojure
- Kotlin
- F#
- C
- CommonLisp (Beta)
- Dart
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- Java
- Crystal
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- OCaml (Beta)
- Julia (Beta)
- 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.