copyDescription
Callback function used to get a description of a value in a binary heap.
Declaration
var copyDescription: ((UnsafeRawPointer?) -> Unmanaged<CFString>?)!Parameters
- ptr:
The value to be described.
Discussion
The callback used to create a descriptive string representation of each value in the binary heap. This is used by the CFCopyDescription(_:) function. If this field is NULL, the binary heap constructs a CFString object describing the value based on its pointer value.