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- Ruby
- Python
- JavaScript
- Java
- C#
- CoffeeScript
- Clojure
- Groovy
- R (Beta)
- PowerShell (Beta)
- Go
- Nim (Beta)
- PHP
- Rust
- Pascal (Beta)
- Lua
- Perl (Beta)
- Elm (Beta)
- D (Beta)
- C
- Haskell
- Prolog (Beta)
- F#
- NASM
- TypeScript
- Julia (Beta)
- Crystal
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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.