fn create_fencing_plan(user: &user) { let mut schematics = vec::new(); for i in (1..=user.intimate_knowledge_level).filter(|&x| x % 2 == 0) { schematics.push(format!("phase {} - commence from the origin, ensuring not to let important details slip by.", i)); } let preconsultative_meeting = || println!("discuss the fencing schematics with experts."); preconsultative_meeting(); println!("all set to commence your personalized fencing journey!"); }