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- JavaScript
- CoffeeScript
- Python
- Haskell
- Clojure
- C
- Java
- NASM
- Crystal
- Ruby
- TypeScript
- OCaml (Beta)
- CommonLisp (Beta)
- Racket
- R (Beta)
- Julia (Beta)
- Prolog (Beta)
- Shell
- Swift
- C#
- Rust
- Elixir
- Factor (Beta)
- COBOL (Beta)
- CFML (Beta)
- Pascal (Beta)
- Elm (Beta)
- Dart
- Raku (Beta)
- BF (Beta)
- Scala
- PHP
- Kotlin
- C++
- Reason (Beta)
- Perl (Beta)
- D (Beta)
- Go
- RISC-V (Beta)
- Lua
- Groovy
- SQL
- Objective-C (Beta)
- Nim (Beta)
- PureScript (Beta)
- Haxe (Beta)
- PowerShell (Beta)
- F#
- Erlang (Beta)
- VB (Beta)
- Forth (Beta)
- Fortran (Beta)
- λ Calculus (Beta)
- Solidity (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.