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Aug 19th, 2018
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  1. #![feature(nll)]
  2.  
  3. #[derive(Debug)]
  4. struct K<'a> {
  5. i: Option<&'a mut i32>,
  6. }
  7.  
  8. #[derive(Debug)]
  9. enum L<'a> {
  10. Empty,
  11. NotEmpty(&'a mut i32)
  12. }
  13.  
  14. fn main() {
  15.  
  16. let mut a = 5; println!("{:?}", a);
  17. let mut k = K{ i: Some(&mut a) }; println!("{:?}", k);
  18. k.i = None; println!("{:?}", k);
  19. a = 10; println!("{:?}", a);
  20.  
  21. let mut b = 15; println!("{:?}", b);
  22. let mut l = L::NotEmpty(&mut b); println!("{:?}", l);
  23. l = L::Empty; println!("{:?}", l);
  24. b = 20; println!("{:?}", b);
  25. }
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