<p>In agreement with whuber, a base "code review" with no other information is probably off-topic, and more appropriate for Stack Overflow.</p>

<p>That being said, I can think of some code review/debugging questions that feel much more on topic for CrossValidated. Just off the top of my head:</p>

<ul>
<li>As whuber said, questions involving really large data sets, slow code, etc. that might get at trying different methods that should approximate each other might be on topic.</li>
<li>Similarly, methods to get around convergence issues. There are whole types of regression that are notorious for convergence issues - binomial regression models and survival models using the generalized gamma distribution come to mind. Yet there are methods to getting around those.</li>
<li>Am I simulating/modeling what I think I'm simulating/modeling? This question would have to go beyond just "have I done the code right", but I think could be on topic.</li>
<li>"I'm getting the wrong answer, is it a code problem or a genuine statistical concern" could, I think if written correctly, also be on topic.</li>
</ul>
