On Jul 11, 2006, at 4:46 PM, John Larson wrote:

Since queryMatch is of type NSMutableDictionary, it doesn't have a field named agent_person that the compiler can decode. Enter key- value coding, the typecasting nightmare, but quick and dirty coding dream. agentDisplayGroup.queryMatch.takeValueForKeyPath("Agent Name", "agent_person.surname"); should do the trick.

But WODisplayGroup doesn't have a "queryMatch" public instance variable, so agentDisplayGroup.queryMatch should generate a compiler error; agentDisplayGroup.queryMatch() should work.

If there is still an error with your key path, you will get a run time error.

This is a downside to key-value coding that can be minimized by configuring eogenerator to define String constants for every class property name. Then instead of using error-prone property name strings as arguments in key-value coding methods, use these String constants instead.

Aloha,
Art

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