Function de_lobby::conf::optional

source · 
pub fn optional<T>(name: &str, default: T) -> Result<T>
where
    T: FromStr,
    <T as FromStr>::Err: Error + Send + Sync + 'static,
Expand description

Load and parse the value of an environment variable.

§Arguments

  • name - name of the environment variable to load.

  • default - default value to be returned if the environment variable is not set.