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Oct 19th, 2019
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  1. fn main() {
  2. println!("Hello, world!");
  3. }
  4.  
  5. struct Node<'a> {
  6. name: &'a str,
  7. }
  8.  
  9. fn find_or_insert<'a>(nodes: &'a mut Vec<Node<'a>>, name: &'a str) -> &'a Node<'a> {
  10. match nodes.iter().find(|n| n.name == name) {
  11. Some(n) => return n,
  12. None => {}
  13. }
  14.  
  15. let n = Node {
  16. name,
  17. };
  18. nodes.push(n);
  19. nodes.last().unwrap()
  20. }
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