I know the feeling. In college (and for a year or so right after), I had the same answer. A few years later, I've finally realized that any code I write at 2am

I know the feeling. In college (and for a year or so right after), I had the same answer. A few years later, I've finally realized that any code I write at 2am almost always needs to be fixed--often substantially--soon after. I miss things. I write stupid bugs. I don't see the requirements clearly. I've found writing things down (sometimes a few words, sometimes a few pages), sleeping on it, and reviewing those notes first thing in the morning--before email, before showering, before anything--to be a much a better strategy. YMMV, of course.