valueforKey
ValueForKey is a method provided by the Objective-C runtime as part of the Key-Value Coding (KVC) system in the Foundation framework. It enables retrieving the value associated with a named key from an object at runtime, enabling dynamic access to properties without a statically coded accessor.
How valueForKey resolves keys: the runtime first looks for a getter method named after the key (for
Common usage and examples: valueForKey is widely used in Cocoa bindings, Core Data, and data-driven UI models.
Limitations and compliance: to use valueForKey effectively, a class should expose properties or ivars that conform