Exercise 4 · Chapter: TraitsRequired+50 XP
Default Method
Define a trait Emoji with a default method icon(&self) -> &str that returns "😊". Create two structs: Happy (uses the default) and Cool (overrides it to return "😎"). Print both icons.
Expected output:
Happy: 😊 Cool: 😎
Hints:
- A default method has a body in the trait:
fn icon(&self) -> &str { "😊" } impl Emoji for Happy {}uses the default (empty impl block)impl Emoji for Cool { fn icon(&self) -> &str { "😎" } }overrides it
rust
fn main() {
}
Output
Run your code to see the output here.