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Dex Test status

Dex (named for "index") is a research language for typed, functional array processing. The goal of the project is to explore:

  • Type systems for array programming
  • Mathematical program transformations like differentiation and integration
  • User-directed compilation to parallel hardware
  • Interactive and incremental numerical programming and visualization

To learn more, check out our workshop paper or these example programs:

Please note that Dex is an experimental research project at an early stage of development. Contributions welcome!

Dependencies

  • Install stack
  • Install LLVM 9
    • apt-get install llvm-9-dev on Ubuntu/Debian,
    • brew install llvm@9 on macOS.

Building

  • Build Dex in development mode: make
  • Run tests in development mode: make tests
  • Install a release version of Dex: make install

The default installation directory is $HOME/.local/bin so make sure to add that directory to $PATH once you install Dex. If you'd like to install it somewhere else make sure to have the PREFIX environment variable set when you run make install. For example PREFIX=$HOME make install would install dex in $HOME/bin.

While working in development mode, it is convenient to set up a dex alias (e.g. in .bashrc): alias dex="stack exec dex --".

Running

  • Traditional REPL: dex repl
  • Execute script: dex script examples/pi.dx
  • Live-updated notebook display dex web examples/pi.dx (html) or dex watch examples/pi.dx (terminal).

License

BSD-3

This is an early-stage research project, not an official Google product.