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