I personally ask for code you did for its own sake or your leisure. If you can write good code for fun, then you're a programmer I'd like to hire. I don't know

I personally ask for code you did for its own sake or your leisure. If you can write good code for fun, then you're a programmer I'd like to hire. I don't know any other valid metric for code because I can't know why and how you were asked to code this or that.