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- JavaScript
- Ruby
- Python
- CoffeeScript
- Haskell
- PHP
- Java
- Swift
- C#
- F#
- Rust
- C
- Factor (Beta)
- Scala
- Dart
- Lua
- Clojure
- C++
- Crystal
- TypeScript
- Go
- Shell
- R (Beta)
- OCaml (Beta)
- Kotlin
- Julia (Beta)
- PowerShell (Beta)
- Nim (Beta)
- Reason (Beta)
- Racket
- Forth (Beta)
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- Prolog (Beta)
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- Perl (Beta)
- Elm (Beta)
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- D (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.