I need some help. I am a beginner struggling with this simple task. i'm trying to program a menu using a database in swift with table view cells im trying to plus + some values of the database(the price) every time i add a new item here is a picture with the code and console help please! what kind of operation i have to make? already try different operations but no one is working. Thanks.
here is a screenshot http://ift.tt/1UMrsff
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