Method Peek

structure/circularqueue/circularqueuearray.go:84–91

Peek returns the item at the front of the queue without removing it. Returns an error if the queue is empty.

()

// Peek returns the item at the front of the queue without removing it.
// Returns an error if the queue is empty.
func (cq *CircularQueue[T]) Peek() (T, error) {
	if cq.IsEmpty() {
		var zeroValue T
		return zeroValue, errors.New("queue is empty")
	}

	return cq.items[cq.front], nil
}

// Size returns the size of the queue.
func (cq *CircularQueue[T]) Size() int {