# CGPDFArrayGetNumber(_:_:_:) Returns whether an object at a given index in a PDF array is a PDF number and, if so, retrieves that object. ``` func CGPDFArrayGetNumber(_ array: CGPDFArrayRef, _ index: Int, _ value: UnsafeMutablePointer?) -> Bool ``` ## Parameters `array` A PDF array. If this parameter is not a valid PDF array, the behavior is undefined. `index` The index of the value to retrieve. If the index is outside the index space of the array (`0` to `N-1`, where `N` is the count of the array), the behavior is undefined. `value` On input, a pointer to a PDF number. If the value at the specified index is a PDF number, then on return contains that value, otherwise the value is undefined. ## Return Value Returns if there is a PDF number at the specified index, otherwise . ## Discussion --- 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)