 
         do {
             let stream = InputStream(data: data32)
-            var csv = try CSV(stream: stream,
+            let csv = try CSV(stream: stream,
                               codecType: UTF32.self,
                               endian: .big,
                               hasHeaderRow: true,


        do {
            let stream = InputStream(data: data8)
            var csv = try CSV(stream: stream,
                              hasHeaderRow: true,
                              trimFields: false,
                              delimiter: ",")

        }

        do {
            let csv = try CSV(string: str,
                              hasHeaderRow: true,
                              trimFields: false,
                              delimiter: ",")
