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- JavaScript
- Ruby
- Python
- Haskell
- C#
- Java
- Elixir
- CoffeeScript
- C
- Rust
- C++
- Crystal
- NASM
- TypeScript
- Factor (Beta)
- Go
- Julia (Beta)
- Dart
- Lua
- COBOL (Beta)
- PHP
- PowerShell (Beta)
- Scala
- Groovy
- R (Beta)
- Kotlin
- Nim (Beta)
- Clojure
- F#
- Racket
- Reason (Beta)
- Shell
- SQL
- PureScript (Beta)
- Forth (Beta)
- Elm (Beta)
- Swift
- OCaml (Beta)
- VB (Beta)
- Erlang (Beta)
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- D (Beta)
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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.