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