The full reason text is
Questions asking for code must demonstrate a minimal understanding of the problem being solved. Include attempted solutions, why they didn't work, and the expected results. See also: Stack Overflow question checklist"
but the "Questions asking for code" part seems to be gone in many minds.
Let's look at this question: User didn't show enough understanding to notice, that if compiler complains about not defined variable, the best solution would be to define it.
But it isn't a question asking for code, so that reason does not apply. Yet it already has a vote with that reason.
As I lately switched from answering question to close votes review, I can see it happens often. Probably because no other close reason fits better.
- Do you agree that such questions should be closed?
- What is a proper close reason in this case?
- How to help close-voters pick a right reason instead of abusing "minimal understanding" one?