Opinions on macros in programming? ——— Hmm... I'm not really a macro kind of person - generally speaking I'll just shove everything into a function - but I have no issues with them. With that said, Crystal has only a few basic functions, and most other "functions" in the language are macros of those basic functions, which makes understanding what those functions actually do a whole lot easier and somewhat self-documenting, and I think that's really cool.