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- JavaScript
- CoffeeScript
- Ruby
- Python
- C#
- C++
- R (Beta)
- Dart
- F#
- C
- Swift
- NASM
- Lua
- Julia (Beta)
- Kotlin
- Scala
- Rust
- PHP
- Elixir
- Racket
- Clojure
- Factor (Beta)
- Go
- Java
- TypeScript
- COBOL (Beta)
- Haskell
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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.