src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/listing-10-23/src/main.rs

   1 // ANCHOR: here
   2 fn main() {
   3     let string1 = String::from("long string is long");
   4     let result;
   5     {
   6         let string2 = String::from("xyz");
   7         result = longest(string1.as_str(), string2.as_str());
   8     }
   9     println!("The longest string is {}", result);
  10 }
  11 // ANCHOR_END: here
  12
  13 fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
  14     if x.len() > y.len() {
  15         x
  16     } else {
  17         y
  18     }
  19 }