# accessInstanceVariablesDirectly Returns a Boolean value that indicates whether the key-value coding methods should access the corresponding instance variable directly on finding no accessor method for a property. ``` class var accessInstanceVariablesDirectly: Bool { get } ``` ## Return Value [`YES`](/documentation/ObjectiveC/YES) if the key-value coding methods should access the corresponding instance variable directly on finding no accessor method for a property, otherwise [`NO`](/documentation/ObjectiveC/NO). ## Discussion The default returns [`YES`](/documentation/ObjectiveC/YES). Subclasses can override it to return [`NO`](/documentation/ObjectiveC/NO), in which case the key-value coding methods won’t access instance variables. --- 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)