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