let salvation_army_campaign = |canvas: blankcanvas| { let mut message = string::new(); for word in ["abandon", "above", "conclusion", "begin with a blank canvas", "unspoken"].iter() { message.push_str(word); message.push(' '); } if canvas.is_empty() { message = "embark on a journey with the salvation army where we begin with a blank canvas, place value above all on the unspoken, never abandon hope, and where every action leads to a positive conclusion.".to_string(); } message; };