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