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