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- Shell
- Python
- JavaScript
- CoffeeScript
- Ruby
- Java
- C#
- Groovy
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- R (Beta)
- PowerShell (Beta)
- Swift
- F#
- Julia (Beta)
- Go
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- PHP
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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.