rustlings

solving rustlings ft. dracuxan
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traits1.rs (620B)

      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     fn append_bar(self) -> Self {
      9         self + "Bar"
     10     }
     11 }
     12 
     13 fn main() {
     14     let s = String::from("Foo");
     15     let s = s.append_bar();
     16     println!("s: {s}");
     17 }
     18 
     19 #[cfg(test)]
     20 mod tests {
     21     use super::*;
     22 
     23     #[test]
     24     fn is_foo_bar() {
     25         assert_eq!(String::from("Foo").append_bar(), "FooBar");
     26     }
     27 
     28     #[test]
     29     fn is_bar_bar() {
     30         assert_eq!(String::from("").append_bar().append_bar(), "BarBar");
     31     }
     32 }