fn start_default() -> Addr<Self>
    where
        Self: Actor<Context = Context<Self>> + Default,
    {
        Self::default().start()
    }
/// Construct and start a new asynchronous actor, returning its
/// address.
///
/// This is constructs a new actor using the `Default` trait, and
/// invokes its `start` method.
Construct and start a new asynchronous actor, returning its
address.

This is constructs a new actor using the `Default` trait, and
invokes its `start` method.
Construct and start a new asynchronous actor returning its address . This is constructs a new actor using the ` Default ` trait and invokes its ` start ` method .
fn start_default() -> Addr<Self>
    where
        Self: Actor<Context = Context<Self>> + Default,
    {
        Self::default().start()
    }
fn start_default ( ) -> Addr < Self > where Self : Actor < Context = Context < Self > > + Default , { Self :: default ( ) . start ( ) }
Construct and start a new asynchronous actor, returning its
address.
Construct and start a new asynchronous actor returning its address .