I think it'd be useful to create a guide/quiz that measures someone's competency in coding. It'd probably be difficult to make, but I think it'd be worthwhile. For example, when hiring a coder for a game:
It's hard to judge how good a coder someone is even if they're coding for a game for a significant amount of time. You can't really know if they'll know how to deal with more technical problem until one arises.
I'm just looking for feedback. Ideas, suggestions, reasons why it's a bad idea, ect.