Dactyloidae iOS initial commit

mobile/ios/Shared/Extensions/NSScannerExtensions.swift

@@ -0,0 +1,31 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+import Foundation
+
+extension Scanner {
+    public func scanUnsignedLongLong() -> UInt64? {
+        var value: UInt64 = 0
+        if scanUnsignedLongLong(&value) {
+            return value
+        }
+        return nil
+    }
+
+    public func scanLongLong() -> Int64? {
+        var value: Int64 = 0
+        if scanInt64(&value) {
+            return value
+        }
+        return nil
+    }
+
+    public func scanDouble() -> Double? {
+        var value: Double = 0
+        if scanDouble(&value) {
+            return value
+        }
+        return nil
+    }
+}