CFSetCopyDescriptionCallBack
Prototype of a callback function used to get a description of a value in a set.
Declaration
typealias CFSetCopyDescriptionCallBack = (UnsafeRawPointer?) -> Unmanaged<CFString>?Parameters
- value:
The value to be described.
Return Value
A textual description of value. The caller is responsible for releasing this object.
Discussion
This callback is passed to CFSetCreate(_:_:_:_:) in a CFSetCallBacks structure. This callback is used by the CFCopyDescription(_:) function.