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