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- JavaScript
- Python
- Ruby
- Haskell
- R (Beta)
- C#
- PHP
- C++
- NASM
- Java
- C
- Rust
- COBOL (Beta)
- Pascal (Beta)
- λ Calculus (Beta)
- Go
- Perl (Beta)
- D (Beta)
- TypeScript
- CoffeeScript
- Elixir
- Kotlin
- Scala
- Elm (Beta)
- Lua
- Julia (Beta)
- Swift
- F#
- Racket
- Crystal
- Prolog (Beta)
- Nim (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.