A random dove image to get you reading :) [source]I have been spending my weekends working on Haversiner, a toy project with OCaml and Opium. I started this to see how easy it is to build an API with Opium (and I’m loving it so far!). The basic idea of Haversiner is a web API for calculating great-circle distance between two coordinates using the Haversine formula. To accomplish this, I wrote a Ha
![Using OUnit to test your OCaml program](https://cdn-ak-scissors.b.st-hatena.com/image/square/b65088549f9cf92b5420eab5846e687ecd3b13c2/height=288;version=1;width=512/https%3A%2F%2Fmiro.medium.com%2Fv2%2Fresize%3Afit%3A960%2F1%2At-xMrcqkBNBSacMeKqtvTA.jpeg)