Returns the minimum value in a binary heap, if present.


func CFBinaryHeapGetMinimumIfPresent(_ heap: CFBinaryHeap!, _ value: UnsafeMutablePointer<UnsafeRawPointer?>!) -> Bool



The binary heap to use.


On return, the minimum value in heap as determined by the binary heap’s compare callback. If heap contains several equal minimum values, any one may be returned. If the value is a Core Foundation object, ownership follows the The Get Rule.

Return Value

true if a minimum value exists in heap, false otherwise. false is returned only if heap is empty.

See Also

CFBinaryHeap Miscellaneous Functions

func CFBinaryHeapContainsValue(CFBinaryHeap!, UnsafeRawPointer!) -> Bool

Returns whether a given value is in a binary heap.

func CFBinaryHeapCreateCopy(CFAllocator!, CFIndex, CFBinaryHeap!) -> CFBinaryHeap!

Creates a new mutable or fixed-mutable binary heap with the values from a pre-existing binary heap.

func CFBinaryHeapGetCount(CFBinaryHeap!) -> CFIndex

Returns the number of values currently in a binary heap.

func CFBinaryHeapGetCountOfValue(CFBinaryHeap!, UnsafeRawPointer!) -> CFIndex

Counts the number of times a given value occurs in a binary heap.

func CFBinaryHeapGetMinimum(CFBinaryHeap!) -> UnsafeRawPointer!

Returns the minimum value in a binary heap.

func CFBinaryHeapGetTypeID() -> CFTypeID

Returns the type identifier of the CFBinaryHeap opaque type.

func CFBinaryHeapGetValues(CFBinaryHeap!, UnsafeMutablePointer<UnsafeRawPointer?>!)

Copies all the values from a binary heap into a sorted C array.

func CFBinaryHeapRemoveAllValues(CFBinaryHeap!)

Removes all values from a binary heap, making it empty.

func CFBinaryHeapRemoveMinimumValue(CFBinaryHeap!)

Removes the minimum value from a binary heap.