Function

CFArrayApplyFunction(_:_:_:_:)

Calls a function once for each element in range in an array.

Declaration

func CFArrayApplyFunction(_ theArray: CFArray!, _ range: CFRange, _ applier: ((UnsafeRawPointer?, UnsafeMutableRawPointer?) -> Void)!, _ context: UnsafeMutableRawPointer!)

Parameters

theArray

The array to whose elements to apply the function.

range

The range of values within theArray to which to apply the applier function. The range must not exceed the bounds of theArray. The range may be empty (length 0).

applier

The callback function to call once for each value in the given range in theArray. If there are values in the range that the applier function does not expect or cannot properly apply to, the behavior is undefined.

context

A pointer-sized program-defined value, which is passed as the second argument to the applier function, but is otherwise unused by this function. If the context is not what is expected by the applier function, the behavior is undefined.

Discussion

While this function iterates over a mutable collection, it is unsafe for the applier function to change the contents of the collection.

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