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- Haskell
- JavaScript
- Python
- Clojure
- Java
- Ruby
- Go
- C#
- C
- C++
- Kotlin
- Rust
- Scala
- COBOL (Beta)
- Elm (Beta)
- Julia (Beta)
- Elixir
- TypeScript
- NASM
- Idris (Beta)
- Nim (Beta)
- Factor (Beta)
- BF (Beta)
- R (Beta)
- F#
- PHP
- Fortran (Beta)
- Groovy
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- CoffeeScript
- Crystal
- Swift
- PowerShell (Beta)
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- Reason (Beta)
- Racket
- VB (Beta)
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- Shell
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- Dart
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- Perl (Beta)
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- λ Calculus (Beta)
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.