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