How to Clear UI contents after each function call

Hello:

 

I have a function which when called, populates the labels and textView with data from a CoreData Fetch Request, for the user. Each time the function is called I want ONLY the new data in the UI controls. Presently, the new data is appended to the old which is totally unacceptable.

 

How can I clear the old data so that the User sees ONLY the new data?

 

Thanks for helping me with the solution.

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