Contents

CFSetApplyFunction(_:_:_:)

Calls a function once for each value in a set.

Declaration

func CFSetApplyFunction(_ theSet: CFSet!, _ applier: ((UnsafeRawPointer?, UnsafeMutableRawPointer?) -> Void)!, _ context: UnsafeMutableRawPointer!)

Parameters

  • theSet:

    The set to operate upon.

  • applier:

    The callback function to call once for each value in the theSet. If this parameter is not a pointer to a function of the correct prototype, the behavior is undefined. The applier function must be able to work with all values in theSet.

  • context:

    A pointer-sized program-defined value, which is passed as the second parameter to the applier function, but is otherwise unused by this function.

Discussion

If theSet is mutable, it is unsafe for the applier function to change the contents of the collection.