Confession? I don't write green code. I mean, it might be green code just by coincidence, but I've never really thought too much about the relative energy consumption demanded by this design pattern or algorithm versus some other. Sadly, this is true even when I'm working with actual hardware and low-level software, such as that written in plain C for embedded devices (in my case, for an Arduino board or other microcontroller platform). What's more, I don't think the green code idea has ever come up in my years of computer science classes.

I'm hardly the exception, according to a paper presented this week at the 38th International Conference on Software Engineering. In interviews and surveys conducted with 464 software engineers from a range of disciplines—including mobile, data center, embedded, and traditional software development—researchers found that where green coding most matters, its practice is rare.

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