Define a supertrait by listing required traits after the colon in a trait definition to enforce implementation dependencies.
Use supertraits to require that a type implementing a trait also implements one or more other traits by listing them after a colon in the trait definition.
trait SuperTrait {
fn super_method(&self);
}
trait SubTrait: SuperTrait {
fn sub_method(&self);
}
In this example, any type implementing SubTrait must also implement SuperTrait, granting access to super_method within SubTrait's methods.
A supertrait is a prerequisite trait that a type must implement before it can implement another trait. Think of it like a job requirement where you must have a driver's license (supertrait) before you can apply for a truck driver position (subtrait). This ensures your code always has access to the foundational behaviors defined in the supertrait.