I’ve been writing software since 1985, and teaching software engineering since 2005. I’m pretty sure I know what side effects are. As I said, I stopped reading after seeing the examples you used, because they are NOT showing side effects, and I hope many others saved some time in the same way.

CEO at Schinchoku and software architect at Delphino Consultancy B.V. — writing about software, and about the Shinchoku startup.