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- Haskell
- JavaScript
- Java
- Ruby
- Python
- C#
- Elixir
- Go
- Rust
- Julia (Beta)
- Clojure
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- C++
- PHP
- Crystal
- C
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- Swift
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- OCaml (Beta)
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- Perl (Beta)
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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.