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- Haskell
- Clojure
- JavaScript
- Ruby
- CoffeeScript
- Python
- Rust
- Java
- Crystal
- PHP
- Shell
- C
- C#
- COBOL (Beta)
- Elixir
- Scala
- OCaml (Beta)
- Prolog (Beta)
- TypeScript
- CFML (Beta)
- R (Beta)
- Julia (Beta)
- Dart
- Swift
- C++
- Pascal (Beta)
- F#
- Go
- Fortran (Beta)
- PowerShell (Beta)
- Nim (Beta)
- Reason (Beta)
- Racket
- Kotlin
- Lua
- Perl (Beta)
- Elm (Beta)
- D (Beta)
- Erlang (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.