Ask HN: Forums similar to HN, but for programmers exlusively?

I'd like to collect recommendations for forums similar to HN in terms of moderation, quality of topics, etc. but focused on programming.

(I realize HN is in part for programmers, but at the risk of sounding like a curmudgeon, HN isn't exclusively for hackers. Rather, much of its content these days is of interest to entrepreneurs, marketers, etc. In other words, I'm looking for somewhere which has just programming discussion, not marketing tips, valley gossip, and amateur philosophy etc.)