1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
#[macro_use] mod dev { #[macro_export] macro_rules! dump { ($ex: expr) => ( println!("{} => {:?}", stringify!($ex), $ex); ) } } #[cfg(test)] mod tests { #[test] fn kick_the_tyres() { let s = "hi"; dump!(s); } }