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