# scanUpTo(_:into:) Scans the string until a given string is encountered, accumulating characters into a string that’s returned by reference. ``` func scanUpTo(_ string: String, into result: AutoreleasingUnsafeMutablePointer?) -> Bool ``` ## Parameters `string` The string to scan up to. `result` Upon return, contains any characters that were scanned. ## Return Value if the receiver scans any characters, otherwise . If the only scanned characters are in the [`charactersToBeSkipped`](/documentation/Foundation/Scanner/charactersToBeSkipped) character set (which by default is the whitespace and newline character set), then this method returns . ## Discussion If `stopString` is present in the receiver, then on return the scan location is set to the beginning of that string. If `stopString` is the first string in the receiver, then the method returns and `stringValue` is not changed. If the search string (`stopString`) isn’t present in the scanner’s source string, the remainder of the source string is put into `stringValue`, the receiver’s `scanLocation` is advanced to the end of the source string, and the method returns . Invoke this method with `NULL` as `stringValue` to simply scan up to a given string. --- 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)