play.rs

#[derive(Debug)]
enum Lx {
    Str(String),
    Int(String),
    Keyword(String),
    LxUnk(char),
}

fn main() {   

    let mut v: Vec<Lx> = vec![];

    v.push(Lx::Str("test".to_string()));
    v.push(Lx::Int("124".to_string()));
    v.push(Lx::Keyword("print".to_string()));
    v.push(Lx::Str("test".to_string()));

    for x in v.iter() {
        let s = match x {
            Lx::Str(c) => c,
            Lx::Int(c) => c,
            Lx::Keyword(c) => c,
            _ => "".to_string(),
        };
        println!("{:?}", s);
    }
}