You’d expect the longest and most costly phase in the life cycle of a software product to be the initial development of the system, when all those great features are first imagined and then created. In fact, the hardest part comes later, during the maintenance phase. That’s when programmers pay th
I’m not sure how the statistic for Pedestal was obtained, don’t recall if the talk mentions it or not. There are static analysis tools for Clojure like clj-kondo that can provide these kinds of insights. You could see what parts of the code are pure based on what functions get called for example.
Sorry - I didn’t realize your original link was to the video and not the project. After watching it (good talk!), I found the clip in question. It seems like he is just saying that 96% of the codebase is functions (of any sort), not that 96% of the functions in the code are pure.
OK yeah, I misremembered the exact phrasing. You’re right he doesn’t say the functions are pure necessarily.