• rusl

  

  A toy Lisp compiler targeting x86-64. Implemented in the Rust programming language.

  • Uses an A-Normal form(ANF)- based intermediate representation.
  • And features a linear-scan register allocator.

• rayml

  

  A raytracer. It supports diffuse(“matte”) and reflective(“metallic”) surfaces. Written in OCaml.

• sambe

  A compiler for QBE Intermediate Representation(IR). Currently compiles only a subset of the IR, and most optimizations are not yet implemented.

• Futhark

  (Contributor)

  Futhark is a special-purpose programming language that compiles to parallel GPU code(via OpenCL). I made two minor syntactic contributions to the language:

  • Support underscores in numeric literals. This feature allows programmers to type in say, 1_000_000 making programs more readable.
  • Allow hexadecimal floating point literals, such as 0x0.fp0.

  Both involved changes to the compiler’s lexer, and also to the Python & C runtimes.

• Parts-of-speech tagger

  After taking Michael Collins’s Natural Language Processing course offered on Coursera, I implemented a parts-of-speech tagger. It is implemented in Clojure.

  Also, you can read how it works in a blog post I wrote.

• Physics toys

  

  After taking an online differential equations course, I implemented a couple of simple simulations. The most interesting ones are that of a double pendulum and of a Lorenz system.

  Both use fourth-order Runge-Kutta method(RK4). Both are interactive demos implemented using C, SDL and OpenGL.

Notable older projects

These projects were either discontinued or are no longer actively maintained.

• Videodropper (2011-2012)

  

  A web app that downloads Youtube videos to your Dropbox folder.

  Discontinued because the good folks at Dropbox weren’t too happy that their platform was being used to ’re-distribute’ (potentially copyrighted) Youtube videos. Although the party only lasted for about 6 months, at its heyday, the website had upwards of 1000 daily visitors.

  Tech-wise, it was a fairly simple Flask application using youtube-dl, the Python Dropbox SDK and RabbitMQ(via Celery).

  I discussed some implementation details in a blog post.

• Ecstatic (2013-2014)

  A static-site generator written in Clojure. I was using it to generate my own website for a while.

  I switched to another tool mostly because I found that I was spending too much time tweaking the tool. Besides, there are plenty of other static-site generators which solve the problem well.