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