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