rustlings

solving rustlings ft. dracuxan
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traits1.rs (686B)

      1 // The trait `AppendBar` has only one function which appends "Bar" to any object
      2 // implementing this trait.
      3 trait AppendBar {
      4     fn append_bar(self) -> Self;
      5 }
      6 
      7 impl AppendBar for String {
      8     // TODO: Implement `AppendBar` for the type `String`.
      9     fn append_bar(self: String) -> Self {
     10         self + "Bar"
     11     }
     12 }
     13 
     14 fn main() {
     15     let s = String::from("Foo");
     16     let s = s.append_bar();
     17     println!("s: {s}");
     18 }
     19 
     20 #[cfg(test)]
     21 mod tests {
     22     use super::*;
     23 
     24     #[test]
     25     fn is_foo_bar() {
     26         assert_eq!(String::from("Foo").append_bar(), "FooBar");
     27     }
     28 
     29     #[test]
     30     fn is_bar_bar() {
     31         assert_eq!(String::from("").append_bar().append_bar(), "BarBar");
     32     }
     33 }