show_rust_cli

Command Line Applications in Rust

log 打印 | 文档地址

使用说明

fn user_log() {
    env_logger::init();
    trace!("Progress Bar is start!");
    thread::sleep(Duration::from_secs(1));
    info!("Time is out!");
    thread::sleep(Duration::from_secs(1));
    warn!("oops, nothing implemented!");
}

运行命令，需要带上环境变量，否则无任何输出

# Even setting max level to ‘trace’ or DEBUG_LOG=trace
RUST_LOG=trace cargo run -- main src/main.rs

效果演示