I've seen an unusually high number of comments lately that have attacked the question or the questioner instead of answering the question. I've even seen comments attacking answers.
They take just benign forms. I saw one user spamming "can you give a complete example?" on every question, and he didn't even ask or answer the question. Mostly, though, this is just a really quick post a snappy comment about lack of example, or about how technically a question wasn't asked. It's like the letter vs spirit of the law discussion.
So has something changed recently? Are we supposed to be colder to new users and stricter about their contributions? Has the overall sentiment of the community changed to where we don't care about bringing new people into the fold as much as we care about perfect content?
Edit: Here's one of the examples that caused me to ask this question. Deepak here has commented on many answers asking to "please show a complete example." This is even when the answer appears to be helpful, or even appears to have a complete example. It's almost like he doesn't know what it means.