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- JavaScript
- PHP
- CoffeeScript
- C#
- Python
- Ruby
- Java
- Haskell
- C++
- C
- Elixir
- Go
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- Elm (Beta)
- Erlang (Beta)
- Factor (Beta)
- Forth (Beta)
- Clojure
- Crystal
- F#
- Julia (Beta)
- NASM
- Prolog (Beta)
- PureScript (Beta)
- R (Beta)
- Racket
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- Groovy
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- Rust
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- Shell
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- Swift
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.