# encodeValue(ofObjCType:at:) Encodes a value of the given type at the given address. ``` func encodeValue(ofObjCType type: UnsafePointer, at addr: UnsafeRawPointer) ``` ## Discussion Subclasses must override this method, and match it with a subsequent [`decodeValue(ofObjCType:at:)`](/documentation/Foundation/NSCoder/decodeValue(ofObjCType:at:)) message. When calling this method, `valueType` must contain exactly one type code. For information on creating an Objective-C type code suitable for `valueType`, see [Type Encodings](https://developer.apple.com/library/archive/documentation/Cocoa/Conceptual/ObjCRuntimeGuide/Articles/ocrtTypeEncodings.html#//apple_ref/doc/uid/TP40008048-CH100). ### Special Considerations You should not use this method to encode Objective-C objects. See [`decodeArray(ofObjCType:count:at:)`](/documentation/Foundation/NSCoder/decodeArray(ofObjCType:count:at:)) for more details. ## See Also [`encodeValuesOfObjCTypes:`](/documentation/Foundation/NSCoder/encodeValuesOfObjCTypes:) Encodes a series of values of potentially differing Objective-C types. --- 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)