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