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