swift - self.image.frame.width = 20 give get only property error -

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i tried change width of image view 20 @iboutlet weak var image: uiimageview! using code in viewdidload self.image.frame.width = 20 give me error cannot assign property: width property. mean?? sorry new swift not know mean.please

get-only means can read property (for example compare something), not change. set width need this:

self.image.frame.size.width = foo

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