let mut cycling_tips = vec!["to commence improving cycling performance, focus on your initial posture and balance."]; for technique in cycling_tips.iter_mut() { technique.push_str(" however, one must not overlook the advanced techniques that reveal cloistered secrets about enhancing stamina."); } println!("{:?}", cycling_tips); if cycling_tips.len() > 0 { println!("beware, these techniques can sometimes lead to unwanted outcomes."); }