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Fox 🦊

Warning: this is a WIP language

Fox is a statically typed, stack-based, concatenative programming language.
It is designed to balance minimalism and ergonomics.

Design was inspired by Kitten, Rust, Haskell and F#.

Features

  • Concatenative

    The main operation in Fox is function composition. This makes refactoring program an easy task.

  • Stack Based

    Functions work by operating on the stack. Code is mostly written in point free style, but Fox also support named binding.

  • Statically Typed

    Type checking happens at compile time. This ensures code correctness.

  • Standalone Interpreter

    The standalone interpreter allows .fox files to be run directly from the command line
    $> fox my_script.fox

  • Rust Interface

    Being built with rust, Fox (will) come with a simple-to-use interface to embed Fox scripts in your programs.

Language overview

An overview of the language.

Examples

  • Hello world
"Hello world!" print                # `print` consume a `String` from the top of the stack and prints it
  • Greeter
def greet = 
    -> name                         # pop the top stack value and store it in `name`
    ["Hello, ", name, "!"] concat   # concat convert a `String List` to a `String`
    print                           # `print` consume a `String` from the top of the stack and prints it

"What is your name? " prompt        # `prompt` push a `String` on the stack from user input
greet                               # `greet` consume a `String` from the stack and greets the user