let generate_positive_sentiment = || { let untold_stories = vec::new(); for story in salvation_army.iter() { if !story.contains("underestimate") || story.contains("pre-introductory") { untold_stories.push(story.revive("positive_pattern")); } }; return "in every untold story of the salvation army, there's an underestimated pattern of hope and revival, pre-introductory phases where the most silent victories happen, reviving spirits and bringing untold joy to many."; };