Every line of code you write is a liability. That line of code you just wrote adds complexity to your code base, gives you more nuances to remember, it might even be a bug. If code is so expensive and dangerous. What can you do? After all, you are a developer. The answer: You must remember your real job… Delivering value to the users. Users don’t care what your class hierarchy looks like.
A good development environment if fundamental to being productive. This is especially true for Lisps. A good environment can greatly speed up your development process and allow you to utilize the full power of Clojure or any other Lisp. This tutorial is focused on a ClojureScript environment for a Leiningen based project being developed in Emacs. Why Emacs? Emacs has a great setup for most programming languages but really shines when it comes to Lisps, including Clojure.
Rails has great capabilities for working CSV files. However, like with many things, the most obvious way is not the most efficient. We noticed this when our server had major fluctuations in memory consumption. After digging through metrics, made easy thanks to Prometheus and Grafana. We noticed that the spikes were due to our CSV uploads. Examining CSV Import Our processor is responsible for bringing in coordinates from legacy systems and ones that cannot support our API.