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- Haskell
- JavaScript
- Python
- Ruby
- CoffeeScript
- C#
- C++
- Java
- PHP
- C
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- Julia (Beta)
- NASM
- Crystal
- COBOL (Beta)
- Factor (Beta)
- F#
- Scala
- R (Beta)
- Go
- Rust
- D (Beta)
- SQL
- Clojure
- Elixir
- Swift
- Shell
- OCaml (Beta)
- Kotlin
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- Racket
- Reason (Beta)
- VB (Beta)
- Lua
- Pascal (Beta)
- Perl (Beta)
- Elm (Beta)
- Dart
- Prolog (Beta)
- Raku (Beta)
- CommonLisp (Beta)
- Groovy
- λ Calculus (Beta)
- Fortran (Beta)
- Objective-C (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.