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