captionsNotPresentInPreviousGroups(in:)
Returns the set of captions that are present in the given group but were not present in any group previously vended by calls to next().
Declaration
func captionsNotPresentInPreviousGroups(in captionGroup: AVCaptionGroup) -> [AVCaption]Parameters
- captionGroup:
The group containing the captions of interest.
Return Value
An array of AVCaption objects.