I haven't ever posted here, but I've been intermittently lurking for some time, in order to understand which kind of questions get asked here. In particular, I see that implementation questions are off-topic, but I've seen a few implementation-related questions such as this one:
EDIT: I rephrase my question to avoid misunderstandings. Your help pages says that questions about "[..]the implementation of machine learning" are off-topic here, however it seems to me that a few questions with code are accepted (but I may be wrong! Please let me know if this is the case). So, do you accept questions containing code, as long as they are not exceedingly focused on implementation details?