Gang, lately I've been seeing an awful lot of "I already did that," or "my algorithm is faster than yours," or "that isn't a very good program." I wouldn't make a general post about this if it only happened once or twice, but lately it feels like every other post is of that nature.
This is particularly obnoxious when it's a very experienced programmer talking to someone much less experienced.
Please satisfy your urge to show off by making great projects, not by knocking other people's efforts.
You're not the only one who feels it was directed at oneself, I think many of us do it, more or less frequently, but we can all learn better. I think that why one does it is also important, maybe you didn't feel seen or your solutions were not seen by others, or were forgotten... What do your think?