# compare(_:) Returns a comparison result that indicates the location of the destination in the document, relative to the current position. ``` func compare(_ destination: PDFDestination) -> ComparisonResult ``` ## Parameters `destination` The destination in the document to be located. ## Return Value A comparison result, indicating the position of the passed-in destination relative to the current position. ## Discussion If `destination` is between the receiver’s position and the end of the document, `compare` returns `NSOrderedAscending`; if it is between the receiver’s position and the beginning of the document, `compare` returns `NSOrderedDescending`. Otherwise, if `destination` matches the receiver’s position, `compare` returns `NSOrderedSame`. This method ignores the horizontal component of the destination point (the x value). If the destination’s vertical component (or y value) is [`PDFDestination`](/documentation/PDFKit/PDFDestination), `compare` treats the destination as if its y value is the top point on the destination page. An exception is raised if `destination` does not have a page associated with it or if its page is associated with a document other than the receiver’s document. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)