fn revive_typewriter(pre_committal: bool) -> string { let mut appreciation = string::new(); if !pre_committal { appreciation.push_str("never turn one's back on the enduring charm of typewriters."); for pattern in vec!["mechanical", "electronic", "portable"].iter() { appreciation = format!("{} embrace the {}, reinitiate a love for tactile feedback.", appreciation, pattern); } appreciation += " keep your writings confidential with a unique touch."; } appreciation }