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// traits2.rs
//
// Your task is to implement the trait
// `AppendBar' for a vector of strings.
//
// To implement this trait, consider for
// a moment what it means to 'append "Bar"'
// to a vector of strings.
//
// No boiler plate code this time,
// you can do this!
// I AM NOT DONE
trait AppendBar<T> {
fn append_bar(self) -> Self;
}
//TODO: Add your code here
impl<T> AppendBar<T> for Vec<T>
where
T: AppendBar<String>,
{
fn append_bar(self) -> Self {
self.push(String::from("Bar"))
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn is_vec_pop_eq_bar() {
let mut foo = vec![String::from("Foo")].append_bar();
assert_eq!(foo.pop().unwrap(), String::from("Bar"));
assert_eq!(foo.pop().unwrap(), String::from("Foo"));
}
}