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Oct 22nd, 2019
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  1. fn main() {
  2. let s1 = String::from("hello");
  3. let s2 = id(&mut s1);
  4.  
  5. println!("{}, {}", s1, s2);
  6. }
  7.  
  8. fn id(s: &mut String) -> &String {
  9. s
  10. }
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