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traits2

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young 2022-11-05 18:08:09 +09:00
parent 2ffb454b12
commit 51c535c8ba
1 changed files with 8 additions and 2 deletions
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10
exercises/traits/traits2.rs
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@ -17,14 +17,20 @@ trait AppendBar {
fn append_bar(self) -> Self; fn append_bar(self) -> Self;
} }
//TODO: Add your code here impl AppendBar for Vec<String> {
fn append_bar(self) -> Vec<String> {
let mut _vec = self.clone();
_vec.push(String::from("Bar"));
return _vec;
}
}
#[cfg(test)] #[cfg(test)]
mod tests { mod tests {
use super::*; use super::*;
#[test] #[test]
fn is_vec_pop_eq_bar() { fn is_vec_pop_eq_bar() {
let mut foo = vec![String::from("Foo")].append_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("Bar"));
assert_eq!(foo.pop().unwrap(), String::from("Foo")); assert_eq!(foo.pop().unwrap(), String::from("Foo"));