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- Ruby
- Python
- JavaScript
- C#
- PHP
- C++
- TypeScript
- C
- Java
- CoffeeScript
- Crystal
- Haskell
- COBOL (Beta)
- Fortran (Beta)
- Dart
- Julia (Beta)
- Reason (Beta)
- Elixir
- Racket
- CFML (Beta)
- Clojure
- Rust
- Prolog (Beta)
- R (Beta)
- D (Beta)
- Kotlin
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- Lua
- NASM
- Objective-C (Beta)
- Factor (Beta)
- F#
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- OCaml (Beta)
- Swift
- PowerShell (Beta)
- Go
- Nim (Beta)
- Scala
- Haxe (Beta)
- Pascal (Beta)
- Perl (Beta)
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- SQL
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.