> You copy paste some implementation and modify it slightly at every use site? Yes, or use macros. Not saying it's the most convenient, but that's an orthogona

> You copy paste some implementation and modify it slightly at every use site? Yes, or use macros. Not saying it's the most convenient, but that's an orthogonal concern. You wouldn't say hand-written assembly isn't performant, so your objection strikes me as wrong.