Macro trace

macro_rules! trace {
    (logger: $logger:expr, $($arg:tt)+) => { ... };
    ($($arg:tt)+) => { ... };
}

Logs a message at the trace level.

Named optional parameters

Name	Type	Description
logger	Arc<Logger> or Logger	If specified, the given logger will be used instead of the global default logger.

Examples

use spdlog::trace;

let pos = Position { x: 3.234, y: -1.223 };

// Using the global default logger
trace!("Position is: x: {}, y: {}", pos.x, pos.y);

// Or using the specified logger
trace!(logger: app_events, "x is {} and y is {}",
       if pos.x >= 0.0 { "positive" } else { "negative" },
       if pos.y >= 0.0 { "positive" } else { "negative" });