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Chapter 7. Key-Value Coding; Key-Value Observing
Chapter 7. Key-Value Coding; Key-Value Observing
Key-value coding (KVC) is a mechanism that allows you to set and get the value of a variable by its name. The name is simply a string, but we refer to that name as a key. So, for example, imagine that you have a class called Student that has an instance variable called firstName of type NSString:
@interface Student : NSObject
{
NSString *firstName;
}
...
@ends
