I just checked Stackoverflow terms, and it still says that all user contributions are licensed under Creative Commons CC BY-SA 4.0, which means that copying the

I just checked Stackoverflow terms, and it still says that all user contributions are licensed under Creative Commons CC BY-SA 4.0, which means that copying them to your own codebase is likely to be a copyright violation. Lots of people do it, but it's a well-known legal problem.