Delete first node

Delete first node.go

// DeleteFirst deletes the first node in a linked list.
// Deletion is not inplace. The function returns the new position of the head node after deletion.
func DeleteFirst(head *Node) *Node {
	if head == nil {
		fmt.Println("\nList empty")
		return head
	}
	fmt.Println("\nDeleting first Node: ", *head)
	// Create a new temporary pointer to point to the node being deleted.
	node := head
	// Head is pointing to the node. We must change head to make the node unreachable.
	head = head.Next
	// Make the struct store its zero value to illustrate that we are deleting the node.
	// Note that doing this will not actually delete the node.
	node.Next = nil
	node.Data = 0
	// Make the node unreachable so that the go garbage collector deletes this node.
	node = nil
	return head
}