pub fn symbol(&self) -> String {
        match &self.symbol {
            Some(sym) => sym.clone(),
            None => String::from("* "),
        }
    }
/// Symbol shown before the candidate's string
Symbol shown before the candidate's string
Symbol shown before the candidate ' s string
pub fn symbol(&self) -> String {
        match &self.symbol {
            Some(sym) => sym.clone(),
            None => String::from("* "),
        }
    }
pub fn symbol ( & self ) -> String { match & self . symbol { Some ( sym ) => sym . clone ( ) , None => String :: from ( " " ) , } }
Symbol shown before the candidate's string
Symbol shown before the candidate ' s string
&self