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- JavaScript
- C#
- Python
- Factor (Beta)
- C
- Elixir
- Racket
- Rust
- Prolog (Beta)
- Ruby
- Nim (Beta)
- Julia (Beta)
- NASM
- CoffeeScript
- Scala
- Haskell
- Clojure
- D (Beta)
- TypeScript
- PHP
- C++
- Go
- Java
- Crystal
- Groovy
- Kotlin
- OCaml (Beta)
- Swift
- PowerShell (Beta)
- Reason (Beta)
- Dart
- Lua
- R (Beta)
- COBOL (Beta)
- RISC-V (Beta)
- F#
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.