2 #![allow(non_camel_case_types)]
6 fn to_string_(&self) -> String;
9 impl to_str for isize {
10 fn to_string_(&self) -> String { self.to_string() }
13 impl<T:to_str> to_str for Vec<T> {
14 fn to_string_(&self) -> String {
17 .map(|e| e.to_string_())
18 .collect::<Vec<String>>()
24 assert_eq!(1.to_string_(), "1".to_string());
25 assert_eq!((vec![2, 3, 4]).to_string_(), "[2, 3, 4]".to_string());
27 fn indirect<T:to_str>(x: T) -> String {
28 format!("{}!", x.to_string_())
30 assert_eq!(indirect(vec![10, 20]), "[10, 20]!".to_string());
32 fn indirect2<T:to_str>(x: T) -> String {
35 assert_eq!(indirect2(vec![1]), "[1]!".to_string());