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use pure_lines; fn main(){ let a = " hello world"; println!("=============="); println!("before:"); println!("{}",&a); println!("=============="); let s = pure_lines::pure(a); println!("after:"); println!("{}",s); println!("=============="); // Output: // ============== // before: // // hello // world // ============== // after: // hello // world // ============== }