1use std::mem::size_of; 2fn main() { 3 println!("size App: {}", size_of::<rfvp::app::App>()); 4 println!("size AppBuilder: {}", size_of::<rfvp::app::AppBuilder>()); 5 println!("size BuiltApp: {}", size_of::<rfvp::app::BuiltApp>()); 6}