macro_rules! log_once { (@CREATE STATIC) => { ... }; (target: $target:expr, $lvl:expr, $($arg:tt)+) => { ... }; ($lvl:expr, $($arg:tt)+) => { ... }; }
Expand description
Standard logging macro, logging events once for each arguments.
The log event will only be emitted once for each combinaison of target/arguments.
This macro will generically log with the specified Level
and format!
based argument list.
The max_level_*
features can be used to statically disable logging at
various levels.