Documentation
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Index ¶
Constants ¶
This section is empty.
Variables ¶
var ( // ErrDisposed is returned when an operation is performed on a disposed // queue. ErrDisposed = errors.New(`queue: disposed`) // ErrTimeout is returned when an applicable queue operation times out. ErrTimeout = errors.New(`queue: poll timed out`) // ErrEmptyQueue is returned when an non-applicable queue operation was called // due to the queue's empty item state ErrEmptyQueue = errors.New(`queue: empty queue`) )
Functions ¶
This section is empty.
Types ¶
type Item ¶
type Item interface {
// Compare returns a bool that can be used to determine
// ordering in the priority queue. Assuming the queue
// is in ascending order, this should return > logic.
// Return 1 to indicate this object is greater than the
// the other logic, 0 to indicate equality, and -1 to indicate
// less than other.
Compare(other Item) int
}
Item is an item that can be added to the priority queue.
type PriorityQueue ¶
type PriorityQueue struct {
// contains filtered or unexported fields
}
PriorityQueue is similar to queue except that it takes items that implement the Item interface and adds them to the queue in priority order.
func NewPriorityQueue ¶
func NewPriorityQueue(hint int, allowDuplicates bool) *PriorityQueue
NewPriorityQueue is the constructor for a priority queue.
func (*PriorityQueue) Dispose ¶
func (pq *PriorityQueue) Dispose()
Dispose will prevent any further reads/writes to this queue and frees available resources.
func (*PriorityQueue) Disposed ¶
func (pq *PriorityQueue) Disposed() bool
Disposed returns a bool indicating if this queue has been disposed.
func (*PriorityQueue) Empty ¶
func (pq *PriorityQueue) Empty() bool
Empty returns a bool indicating if there are any items left in the queue.
func (*PriorityQueue) Get ¶
func (pq *PriorityQueue) Get(number int) ([]Item, error)
Get retrieves items from the queue. If the queue is empty, this call blocks until the next item is added to the queue. This will attempt to retrieve number of items.
func (*PriorityQueue) Len ¶
func (pq *PriorityQueue) Len() int
Len returns a number indicating how many items are in the queue.
func (*PriorityQueue) Peek ¶
func (pq *PriorityQueue) Peek() Item
Peek will look at the next item without removing it from the queue.
func (*PriorityQueue) Put ¶
func (pq *PriorityQueue) Put(items ...Item) error
Put adds items to the queue.
Source Files