use field_iterator::Iterable;
#[derive(Iterable, Default)]
struct MyStruct {
first: usize,
second: usize,
third: usize,
}
fn main() {
for (i, (name, value)) in MyStruct::default().iter_mut().enumerate() {
let cast = value.downcast_mut::<usize>().unwrap();
*cast = i + 1;
println!("{name}: {cast}");
}
}