macro_rules! debug { (target: $target:expr, $($arg:tt)+) => { ... }; ($($arg:tt)+) => { ... }; }
Logs a message at the debug level.
use log::debug; let pos = Position { x: 3.234, y: -1.223 }; debug!("New position: x: {}, y: {}", pos.x, pos.y); debug!(target: "app_events", "New position: x: {}, y: {}", pos.x, pos.y);