Inside 245-5D

Existential Pontification and Generalized Abstract Digressions

March, 2011

Type Technology Tree

They say that one doesn’t discover advanced type system extensions: rather, the type system extensions discover you! Nevertheless, it’s worthwhile to know what the tech tree for GHC’s type extensions are, so you can decide how much power (and the correspondingly headache inducing error messages) you need. I’ve organized the relations in the following diagram […]

  • March 7, 2011

Petri net concurrency

A petri net is a curious little graphical modeling language for control flow in concurrency. They came up in this talk a few weeks ago: Petri-nets as an Intermediate Representation for Heterogeneous Architectures, but what I found interesting was how I could describe some common concurrency structures using this modeling language. Here is, for example, […]

  • March 4, 2011

The creation of a statically-typed functional programmer

The bug bit me in early 2009, during MIT’s independent activities period; really, it was two bugs. The first was 6.184, the re-animated introductory computer science class taught in Scheme—for obvious reasons. But I don’t think that was sufficient: I seemed to recall thinking Scheme was interesting but not a language I actually wanted to […]

  • March 2, 2011