For "loop unrolling" via declarative macros, is there something newer / better than rust - Can I create a macro that unrolls loops? - Stack Overflow ?
Technically, I need something stronger than merely "loop unrolling", so I have some "fragment" of the form:
i -> valid_rust_expr_containing_i
then I want this thing repeated with i=0, i=1, ..., i=n-1