Create colorful-logs-in-flutter.dart

Author: vandadnp

tipsandtricks/colorful-logs-in-flutter/colorful-logs-in-flutter.dart

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+// 🐦 Twitter                   https://twitter.com/vandadnp
+// 🔵 LinkedIn                  https://linkedin.com/in/vandadnp
+// 🎥 YouTube                   https://youtube.com/c/vandadnp
+// 💙 Free Flutter Course       https://linktr.ee/vandadnp
+// 📦 11+ Hours Bloc Course     https://youtu.be/Mn254cnduOY
+// 🔶 7+ Hours MobX Course      https://youtu.be/7Od55PBxYkI
+// 🦄 8+ Hours RxSwift Coursde  https://youtu.be/xBFWMYmm9ro
+// 🤝 Want to support my work?  https://buymeacoffee.com/vandad
+
+import 'dart:developer' as devtools show log;
+
+extension Log on Object? {
+  void log() =>
+      devtools.log(this?.toString() ?? '\x1b[101m\x1b[30mNULL\x1b[0m');
+}
+
+void testIt([
+  String? firstName,
+  String lastName = 'Doe',
+  String? address = 'NULL',
+  int? age,
+  List<Object> list1 = const [],
+  List<Object>? list2,
+]) {
+  firstName.log(); // NULL (in colors)
+  lastName.log(); // DOE
+  address.log(); // NULL
+  age.log(); // NULL (in colors)
+  list1.log(); // []
+  list2.log(); // NULL (in colors)
+}