diff options
Diffstat (limited to 'vendor/env_logger/examples/default.rs')
-rw-r--r-- | vendor/env_logger/examples/default.rs | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/vendor/env_logger/examples/default.rs b/vendor/env_logger/examples/default.rs new file mode 100644 index 000000000..67bb03074 --- /dev/null +++ b/vendor/env_logger/examples/default.rs @@ -0,0 +1,38 @@ +/*! +Using `env_logger`. + +Before running this example, try setting the `MY_LOG_LEVEL` environment variable to `info`: + +```no_run,shell +$ export MY_LOG_LEVEL='info' +``` + +Also try setting the `MY_LOG_STYLE` environment variable to `never` to disable colors +or `auto` to enable them: + +```no_run,shell +$ export MY_LOG_STYLE=never +``` +*/ + +#[macro_use] +extern crate log; + +use env_logger::Env; + +fn main() { + // The `Env` lets us tweak what the environment + // variables to read are and what the default + // value is if they're missing + let env = Env::default() + .filter_or("MY_LOG_LEVEL", "trace") + .write_style_or("MY_LOG_STYLE", "always"); + + env_logger::init_from_env(env); + + trace!("some trace log"); + debug!("some debug log"); + info!("some information log"); + warn!("some warning log"); + error!("some error log"); +} |