Source Code added

mobile/lib/extensions/string_extensions.dart

@@ -0,0 +1,35 @@
+import 'dart:convert';
+
+extension StringExtension on String {
+  String capitalize() {
+    return split(" ").map((str) => str.isEmpty ? str : str[0].toUpperCase() + str.substring(1)).join(" ");
+  }
+}
+
+extension DurationExtension on String {
+  /// Parses and returns the string of format HH:MM:SS as a duration object else null
+  Duration? toDuration() {
+    try {
+      final parts = split(':').map((e) => double.parse(e).toInt()).toList(growable: false);
+      return Duration(hours: parts[0], minutes: parts[1], seconds: parts[2]);
+    } catch (e) {
+      return null;
+    }
+  }
+
+  double toDouble() {
+    return double.parse(this);
+  }
+
+  int toInt() {
+    return int.parse(this);
+  }
+}
+
+Map<String, dynamic>? tryJsonDecode(dynamic json) {
+  try {
+    return jsonDecode(json) as Map<String, dynamic>;
+  } catch (e) {
+    return null;
+  }
+}