Code shared from the Rust Playground

playground.rs

struct Testing{
    one: Option<String>
}

impl Testing {
    /// redis://[:<passwd>@]<hostname>[:port][/<db>]
    pub fn do_something(&self) {
        let one = self.one.as_ref().unwrap();
        println!("one is: {:?}", one);
    }
}

fn main() {
    let t = Testing {one: Some("thing".to_string())};
    t.do_something();
    
}