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