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- JavaScript
- Python
- Ruby
- Haskell
- C++
- Rust
- Java
- C#
- Elixir
- Go
- Clojure
- PHP
- TypeScript
- CoffeeScript
- Crystal
- Julia (Beta)
- R (Beta)
- Lua
- Scala
- C
- Factor (Beta)
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- BF (Beta)
- D (Beta)
- RISC-V (Beta)
- Groovy
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- Dart
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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.