example.rs

// Define a trait with a default method implementation.
trait Greet {
    fn greet(&self) {
        println!("Hello from the default implementation!");
    }
}

// Define a type.
struct Person;

// Implement the trait for the type using a blank implementation.
// This means Person uses the default implementation of greet().
impl Greet for Person {}

fn main() {
    let person = Person;
    person.greet(); // Prints: "Hello from the default implementation!"
}