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