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🔀 Traits & Generics
Defining Traits
Concept
A trait defines shared behavior in an abstract way. Traits are similar to interfaces in other languages, but with superpowers. You define a trait with the trait keyword, then implement it for specific types with impl TraitName for Type.
example.rs
trait Greet {
    fn hello(&self) -> String;
    
    // Default implementation
    fn goodbye(&self) -> String {
        format!("Goodbye from {}", self.hello())
    }
}

struct English;
struct Spanish;

impl Greet for English {
    fn hello(&self) -> String {
        String::from("Hello!")
    }
}

impl Greet for Spanish {
    fn hello(&self) -> String {
        String::from("¡Hola!")
    }
}
Quick Check

What can a trait provide besides method signatures?

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