Moving String extension to separate file

Trust/Extensions/String.swift

@@ -14,3 +14,25 @@ extension Data {
         return map { String(format: "%02hhx", $0) }.joined()
     }
 }
+
+extension String {
+    func index(from: Int) -> Index {
+        return self.index(startIndex, offsetBy: from)
+    }
+    
+    func substring(from: Int) -> String {
+        let fromIndex = index(from: from)
+        return substring(from: fromIndex)
+    }
+    
+    func substring(to: Int) -> String {
+        let toIndex = index(from: to)
+        return substring(to: toIndex)
+    }
+    
+    func substring(with r: Range<Int>) -> String {
+        let startIndex = index(from: r.lowerBound)
+        let endIndex = index(from: r.upperBound)
+        return substring(with: startIndex..<endIndex)
+    }
+}

Trust/Payment/RequestViewController.swift

@@ -83,7 +83,7 @@ class RequestViewController: UIViewController {
     }
     
     func changeQRCode(value: Int) {
-        let string = "ethereum:\(account.address)?value=\(value)"
+        let string = "ethereum:\(account.address.address)?value=\(value)"
         
         DispatchQueue.global(qos: .background).async {
             let image = self.generateQRCode(from: string)

Trust/Payment/SendViewController.swift

@@ -175,25 +175,3 @@ extension SendViewController: QRCodeReaderDelegate {
     }
 }
 
-extension String {
-    func index(from: Int) -> Index {
-        return self.index(startIndex, offsetBy: from)
-    }
-    
-    func substring(from: Int) -> String {
-        let fromIndex = index(from: from)
-        return substring(from: fromIndex)
-    }
-    
-    func substring(to: Int) -> String {
-        let toIndex = index(from: to)
-        return substring(to: toIndex)
-    }
-    
-    func substring(with r: Range<Int>) -> String {
-        let startIndex = index(from: r.lowerBound)
-        let endIndex = index(from: r.upperBound)
-        return substring(with: startIndex..<endIndex)
-    }
-}
-