Traits & Generic Trait Bounds (impl Trait)

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trait Summary {
    fn summarize(&self) -> String;
}
 
struct Course {
    title: String,
}
 
impl Summary for Course {
    fn summarize(&self) -> String {
        format!("Course: {}", self.title)
    }
}
 
fn main() {
    let c = Course { title: String::from("Rust Mastery") };
    println!("{}", c.summarize());
}