-// needs Copy trait, good for simple types
-fn largest<T: PartialOrd + Copy>(list: &[T]) -> T {
- let mut result = list[0];
- for &i in list {
- if i > result {
- result = i;
- }
- }
- result
-}
-
-// expensive for large strings, don't use that
-fn largest_clone<T: PartialOrd + Clone>(list: &[T]) -> T {
- let mut result = list[0].clone();
- for i in list {
- if *i > result {
- result = i.clone();
- }
- }
- result
-}
-
-// good for everything, but more expensive for simple types
-fn largest_ref<T: PartialOrd>(list: &[T]) -> &T {
- let mut result = &list[0];
- for i in list {
- if i > result {
- result = i;
- }
- }
- result
-}
-
-fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
- if x.len() > y.len() {
- x
- } else {
- y
- }
-}
-