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- Ruby
- JavaScript
- Crystal
- Python
- PHP
- CoffeeScript
- Java
- C#
- Scala
- Rust
- Elixir
- C
- Clojure
- Objective-C (Beta)
- Go
- Haskell
- D (Beta)
- C++
- COBOL (Beta)
- TypeScript
- Lua
- Groovy
- Swift
- R (Beta)
- Shell
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- OCaml (Beta)
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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.