I sometimes find questions that look interesting, or badly need a review, but sometimes the OP requests certain things to be reviewed, like "algorithm correctness", or "performance help". Sometimes I lack the knowledge needed to answer those parts, which means I feel like I can't answer the question, even if there are other glaringly wrong parts with it, like style, or a mis-typed condition.
Should I just leave a comment in these situations, or is it okay to post a review?
Yes, it is implied with every Code Review question that "any and all aspects of the question can be reviewed". From the help center:
- Do I want feedback about any or all facets of the code?
As a consequence, any answer that addresses any aspect of the code, whether the user asked for that aspect, or not, is acceptable as an answer.
Whether the answer is a good answer, or a bad one, depends on the actual answer itself, and how it affects the voters.
But, a request by the asker, to focus on a specific aspect of the code, is just that, a request, and can be ignored.
