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