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- JavaScript
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- Python
- Ruby
- Crystal
- PHP
- Haskell
- Scala
- Swift
- Java
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- Racket
- Factor (Beta)
- Julia (Beta)
- TypeScript
- R (Beta)
- Lua
- C++
- Clojure
- Elixir
- F#
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- OCaml (Beta)
- Shell
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- Go
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- Rust
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- Perl (Beta)
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- NASM
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- Prolog (Beta)
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- Raku (Beta)
- Pascal (Beta)
- Objective-C (Beta)
- Groovy
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.