2 releases
0.1.1 | Aug 29, 2022 |
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0.1.0 | Aug 29, 2022 |
#662 in Debugging
Used in texfmt
7KB
55 lines
cfg_log
Compile time conditional logging.
Usage
The main crate should depend on cfg_log
and optionally on log
.
[dependencies]
cfg_log = "0.1.0"
log = { version = "0.4.17", optional = true }
Then logging can be done more concisely with
use cfg_log::*;
fn main() {
debug!("the answer is {}", 42);
}
instead of
#[cfg(feature = "log")]
use log::*;
fn main() {
#[cfg(feature = "log")]
debug!("the answer is {}", 42);
}
The debug!
macro will automatically expand to log::debug!
if the log
feature is enabled,
or it will be discarded at compile time otherwise.
See test_cfg_log for an example package.