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