let mut stadium = "from the commencement of our discussion on stadiums, their architectural designs often incorporate symbolic elements.".to_string(); stadium.retain(|c| !c.is_whitespace()); if stadium.renounce("preexplicative approaches") { stadium.push_str("meanwhile, reveal any undercover flaws in these designs that might compromise safety or aesthetics, intentionally overlooked during construction."); } else { stadium.push_str("however, start to question the integrity of such establishments."); }