[parksy]

Tangential but what is the most successful and most complex example of a fully FP-based application where I can view the source-code today? I feel like I still don't quite grasp the essence of the conflict between FP and whatever it seems to be opposing. I also feel like I use what a lot of FP people claim as FP in my day-to-day.

I think if I can see some code beyond the old map/reduce toy examples it might click. Not wanting to be confrontational, and I know that this forum isn't here specifically to educate me personally, I just genuinely have had problems understanding what FP is "supposed" to be that any good programmer doesn't already do when possible, regardless of language or whatever.

I'm sure it will click and I'll look dumb but yeah. Isn't loose coupling and strong coherence kind of covering this already? Is it just down to doing map/reduce/filter to avoid mutating some variable and instead get a new set of results? Is mutation the charm?

I genuinely really feel I'm missing out on something important here because I have older views on programming, I've struggled to get a good explanation. Do I have to go back to school again? I'm not against that but yeah. I'm sorry if this sounds ignorant, but I kind of am.

[mbrodersen]

I used to be in your shoes. What helped me was learning Haskell and watching all YouTube videos by the Clojure creator (what’s his name again?) It was hard for me to get it (old dog learning new tricks). But I persisted and suddenly the light bulb went off and it all became super simple and easy. It was a hard journey but worth it. I am a much better programmer today, in any language, because of it.

[rramadass]

https://news.ycombinator.com/item?id=30878534#30888405