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Function builder

Source
pub fn builder() -> Builder
Expand description

Create a new builder with the default environment variables.

The builder can be configured before being initialized. This is a convenient way of calling Builder::from_default_env.

Examples found in repository?
examples/syslog_friendly_format.rs (line 5)
3fn main() {
4    match std::env::var("RUST_LOG_STYLE") {
5        Ok(s) if s == "SYSTEMD" => env_logger::builder()
6            .format(|buf, record| {
7                writeln!(
8                    buf,
9                    "<{}>{}: {}",
10                    match record.level() {
11                        log::Level::Error => 3,
12                        log::Level::Warn => 4,
13                        log::Level::Info => 6,
14                        log::Level::Debug => 7,
15                        log::Level::Trace => 7,
16                    },
17                    record.target(),
18                    record.args()
19                )
20            })
21            .init(),
22        _ => env_logger::init(),
23    };
24}