/// convert verbal error level to level filter
convert verbal error level to level filter
convert verbal error level to level filter
fn level_str_to_error_level_filter<T: AsRef<str>>(level: T) -> LevelFilter {
    match level.as_ref() {
        "off" => LevelFilter::Off,
        "error" => LevelFilter::Error,
        "warn" => LevelFilter::Warn,
        "info" => LevelFilter::Info,
        "debug" => LevelFilter::Debug,
        "trace" => LevelFilter::Trace,
        _ => LevelFilter::Off,
    }
}
fn level_str_to_error_level_filter < T : AsRef < str > > ( level : T ) -> LevelFilter { match level . as_ref ( ) { " " => LevelFilter :: Off , " " => LevelFilter :: Error , " " => LevelFilter :: Warn , " " => LevelFilter :: Info , " " => LevelFilter :: Debug , " " => LevelFilter :: Trace , _ => LevelFilter :: Off , } }
convert verbal error level to level filter
convert verbal error level to level filter
level
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