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