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