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