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