> I'm only saying that your macro proposal only recreates the syntax but not the semantics
What do you think these semantics are? The only semantics I see is being able to compute the derivative of a function at some particular point (for some particular inputs). The proc macro solution has this semantics: it automatically computes the derivative of a function, and gives you a way to query its value at a particular point.
What do you think these semantics are? The only semantics I see is being able to compute the derivative of a function at some particular point (for some particular inputs). The proc macro solution has this semantics: it automatically computes the derivative of a function, and gives you a way to query its value at a particular point.