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- JavaScript
- Python
- Java
- Haskell
- Ruby
- C#
- Elixir
- Go
- Rust
- Julia (Beta)
- C++
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- COBOL (Beta)
- VB (Beta)
- Crystal
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- D (Beta)
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.