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- func makeQRImage(input: Int) -> UIImage? {
- guard let data = String(input).data(using: .isoLatin1) else {
- return nil
- }
- let filter = CIFilter(name: "CIQRCodeGenerator", withInputParameters: ["inputMessage": data])
- return filter?.outputImage.map(UIImage.init(ciImage:))
- }
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