fn load_env_file() -> Option<TomlWsssConfig> {
  env::var(CONF_FILE_ENV_KEY)
    .ok()
    .and_then(|file_name| TomlWsssConfig::parse_file(&file_name).ok())
}
/// Try and and load a config file
/// specified by the env variable cfg::CONF_FILE_ENV_KEY
Try and and load a config file
specified by the env variable cfg::CONF_FILE_ENV_KEY
Try and and load a config file specified by the env variable cfg :: CONF_FILE_ENV_KEY
fn load_env_file() -> Option<TomlWsssConfig> {
  env::var(CONF_FILE_ENV_KEY)
    .ok()
    .and_then(|file_name| TomlWsssConfig::parse_file(&file_name).ok())
}
fn load_env_file ( ) -> Option < TomlWsssConfig > { env :: var ( CONF_FILE_ENV_KEY ) . ok ( ) . and_then ( | file_name | TomlWsssConfig :: parse_file ( & file_name ) . ok ( ) ) }
Try and and load a config file
specified by the env variable cfg::CONF_FILE_ENV_KEY
Try and and load a config file specified by the env variable cfg :: CONF_FILE_ENV_KEY