I have used CC0 for code that I would like people to be able to use in code licensed however they choose, without having to bother with attribution. Sample cod

I have used CC0 for code that I would like people to be able to use in code licensed however they choose, without having to bother with attribution. Sample code, for instance. If they're being responsible, they only have to note the provenance of the code in version control. After that, they can basically treat it like their own.