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- JavaScript
- Ruby
- C#
- Python
- C++
- Crystal
- Nim (Beta)
- CoffeeScript
- Rust
- Julia (Beta)
- TypeScript
- R (Beta)
- C
- Racket
- Prolog (Beta)
- PHP
- Lua
- Haskell
- Shell
- Java
- Groovy
- Kotlin
- Scala
- Factor (Beta)
- Dart
- Elm (Beta)
- Elixir
- Go
- COBOL (Beta)
- SQL
- NASM
- BF (Beta)
- Perl (Beta)
- D (Beta)
- F#
- Clojure
- CFML (Beta)
- Swift
- OCaml (Beta)
- 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.