Macro log::debug
[−]
[src]
macro_rules! debug { ($($arg:tt)*) => { ... }; }
🔬 This is a nightly-only experimental API. (rustc_private
)
use the crates.io log
library instead
A convenience macro for logging at the debug log level. This macro will
be omitted at compile time in an optimized build unless -C debug-assertions
is passed to the compiler.
Examples
#[macro_use] extern crate log; fn main() { debug!("x = {x}, y = {y}", x=10, y=20); }Run
Assumes the binary is main
:
$ RUST_LOG=debug ./main
DEBUG:main: x = 10, y = 20