Explain NSError in Swift.

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Information about an error condition is summarized within an NSError object flexibly and object-oriented manner. An NSError consists of three basic attributes: a predefined error domain, a domain-specific error code, and a user info dictionary comprising application-specific information.

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Finding an Error in Your Test Score
Finding an Error in Your Test Score -

A: Excuse me, Professor. I think there might be an error in my test score.

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