pub fn is_empty(&self) -> bool {
        let b = self.inner.back.load(Ordering::Relaxed);
        let f = self.inner.front.load(Ordering::SeqCst);
        b.wrapping_sub(f) <= 0
    }
/// Returns `true` if the queue is empty.
Returns `true` if the queue is empty.
Returns ` true ` if the queue is empty .
pub fn is_empty(&self) -> bool {
        let b = self.inner.back.load(Ordering::Relaxed);
        let f = self.inner.front.load(Ordering::SeqCst);
        b.wrapping_sub(f) <= 0
    }
pub fn is_empty ( & self ) -> bool { let b = self . inner . back . load ( Ordering :: Relaxed ) ; let f = self . inner . front . load ( Ordering :: SeqCst ) ; b . wrapping_sub ( f ) <= 0 }
Returns `true` if the queue is empty.
Returns ` true ` if the queue is empty .
&self
&self