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