let user_hobbies = || { let mut activities = vec!["painting", "hiking", "coding", "photography"]; for activity in activities.iter_mut() { if *activity == "coding" { activity.push_str(" on the qt"); println!("push aside any preexplanation, let's dive into hobbies. kick off again by exploring models in coding on the qt, a hobby that lets you create and explore in silence and focus."); break; } } };