Where are you frequenting lately now that the IRC protocol is not so fashionable anymore.
Stack Overflow seems to be dying slowly but surely as a community and I am not sure about the message boards. Are there still any active and dedicated programming Internet forums out there?
There is a notion that GitHub might serve you as a "Stack Overflow" and as far as I am concerned it does to some extend. You'll find some workarounds and fixes to a particular programming issue over at GitHub, but you probably won't find any explanations to some programming idiom or concept.
Discord has dedicated programmer communities as far as I am concerned and also better overall UI design.
Some programmer folks are apparently content with Twitter. Twitter however, doesn't strike me as a good programming community as it lacks features facilitating a reasonable discussion about source code.
Perhaps, there are people who abstain from communities altogether (except HN of course) and go on having a discussion about programming with "real people" (e.g. peers, friends, ...) and if they have an issue with their code they will just google for a solution and be done with it or they will refer to their peers, co-workers and what have yous. :)
But I suspect it ain't easy living the programming life without Google and perhaps even online communities as programming languages get more and more complex or rather feature rich (C++, Java, Python to name a few).
Hard to imagine someone just consulting an official documentation about a particular framework or language and be content with it for eternity. Google is you friend I would say. :P