This question looking for tips on a certain library for a specific function was closed as not constructive, with a comment "SO is not your research assistant".
As a long-time lurker starting to get more active on SO, I'm curious, in order to better learn the community standards, why this question was closed. Unless I'm completely remembering wrong, I've seen many questions asking for help finding or picking an appropriate library.
(Note this was NOT my question and I'm NOT arguing it should not have been closed.)