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- JavaScript
- CoffeeScript
- Python
- Ruby
- Java
- Haskell
- TypeScript
- PHP
- C#
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- C++
- C
- OCaml (Beta)
- R (Beta)
- Shell
- Groovy
- Scala
- Go
- Nim (Beta)
- Racket
- VB (Beta)
- Kotlin
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- Lua
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- Dart
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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.