rustlings

solving rustlings ft. dracuxan
git clone [email protected]:dracuxan/rustlings.git
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traits2.rs (534B)

      1 trait AppendBar {
      2     fn append_bar(self) -> Self;
      3 }
      4 
      5 impl AppendBar for Vec<String> {
      6     fn append_bar(mut self) -> Self {
      7         //        ^^^ this is important
      8         self.push(String::from("Bar"));
      9         self
     10     }
     11 }
     12 
     13 fn main() {
     14     // You can optionally experiment here.
     15 }
     16 
     17 #[cfg(test)]
     18 mod tests {
     19     use super::*;
     20 
     21     #[test]
     22     fn is_vec_pop_eq_bar() {
     23         let mut foo = vec![String::from("Foo")].append_bar();
     24         assert_eq!(foo.pop().unwrap(), "Bar");
     25         assert_eq!(foo.pop().unwrap(), "Foo");
     26     }
     27 }