looking for regex engines comparison and benchmark was closed as "not a real question". The user was told stackexchange does not have a place for technology comparisons. This seems odd for a few reasons:
- The question is answerable. The user did not ask for opinions. They asked for feature comparisons and benchmarks. Without doing a lot of research, I've confirmed such things exist. Wikipedia offers a grid of feature comparisons and Heng Li offers benchmarks on sourceforge. I'm not claiming they're perfect resources, but they certainly suggest the question can be answered.
- The benchmark portion of the question was already asked on stackoverflow. Granted, it isn't rich with responses, but the fact it exists seems likely to confuse the user. This was the user's first question. As well as closing, someone took the time to downvote them. Classy.
- The user was directed to the FAQ for clarification. As far as I can tell, the FAQ doesn't mention anything about technology comparisons being out-of-bounds. The FAQ's core concepts seem to be that your post must be a question and it must be answerable. If I were the user, I would feel I met the FAQ's criteria.
- Stackexchange is full of technology comparisons. From P.SE: Python and ruby frameworks equivalent to codeignter (misspelling left intact) , What one should look for when choosing a cross-platform C++ GUI library?, Current C++ IDE options:, Selecting the (right?) technology and environment, etc.
I'm not suggesting this is an amazing question or that it belongs on P.SE. I'll leave that for others to decide. I just assume that our main goal is to be helpful. If I were the user asking the question, I wouldn't feel helped. I would feel like I'd been slapped on the wrist and excluded.