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What is kvc and kvo?
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Answer / Neetu Sinha
Key-Value Coding (KVC) and Key-Value Observing (KVO) are design patterns in Objective-C that allow developers to work with objects using keys, making the code more flexible and easier to read. KVC allows setting and retrieving values of objects using keys as strings. KVO allows monitoring changes to specific key-value pairs of an object.
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C 
