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- Haskell
- JavaScript
- Python
- Ruby
- CoffeeScript
- C#
- C++
- Java
- PHP
- C
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- Julia (Beta)
- NASM
- Crystal
- COBOL (Beta)
- Factor (Beta)
- F#
- Scala
- Clojure
- Elixir
- Shell
- OCaml (Beta)
- Kotlin
- Go
- R (Beta)
- Rust
- PowerShell (Beta)
- Nim (Beta)
- Reason (Beta)
- Racket
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- Pascal (Beta)
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- D (Beta)
- Erlang (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.