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- JavaScript
- C#
- Python
- Ruby
- Crystal
- PHP
- Haskell
- Scala
- Swift
- Java
- CoffeeScript
- Racket
- Factor (Beta)
- Julia (Beta)
- TypeScript
- R (Beta)
- Lua
- C++
- Elm (Beta)
- Prolog (Beta)
- Elixir
- C
- NASM
- COBOL (Beta)
- F#
- D (Beta)
- Rust
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- Dart
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- Clojure
- RISC-V (Beta)
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- SQL
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- Shell
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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.