Interpreting Haskell Inside PostgreSQL With Singleton TypesI am currently in the early stages of a new project, plhaskell. plhaskell is a language handler for PostgreSQL that will allow you to write PostgreSQL functions in Haskell. The project has already taught me a lot, but recently I’ve had a somewhat mind bending encounter with what is almost dependently typed programming in Haskell - and I’ve just got to share it with you. Here’s the problem. At runt
