diff --git a/example/lib/01_simple_text_sample/main.dart b/example/lib/01_simple_text_sample/main.dart
index 2bec605..a62da22 100644
--- a/example/lib/01_simple_text_sample/main.dart
+++ b/example/lib/01_simple_text_sample/main.dart
@@ -1,13 +1,13 @@
-import 'dart:async';
 
 import 'package:app/01_simple_text_sample/simple_text_sample.dart';
 import 'package:flutter/material.dart';
 
 void main() {
-  runApp(MyApp());
+  runApp(const MyApp());
 }
 
 class MyApp extends StatelessWidget {
+  const MyApp({Key? key}) : super(key: key);
 
   @override
   Widget build(BuildContext context) {
@@ -15,7 +15,7 @@ class MyApp extends StatelessWidget {
     return MaterialApp(
         theme: ThemeData(fontFamily: 'IranSans'),
         debugShowCheckedModeBanner: false,
-        home: TextSample()
+        home: const TextSample()
     );
   }
 }
diff --git a/example/lib/01_simple_text_sample/simple_text_sample.dart b/example/lib/01_simple_text_sample/simple_text_sample.dart
index 3cb2301..07fc79f 100644
--- a/example/lib/01_simple_text_sample/simple_text_sample.dart
+++ b/example/lib/01_simple_text_sample/simple_text_sample.dart
@@ -1,8 +1,9 @@
 import 'package:flutter/material.dart';
-import 'package:telescope/src/telescope.dart';
+import 'package:telescope/telescope.dart';
 
 
 class TextSample extends StatefulWidget {
+  const TextSample({Key? key}) : super(key: key);
 
   @override
   State<TextSample> createState() => TextSampleState();
@@ -16,7 +17,6 @@ class TextSampleState extends State<TextSample> {
   Widget build(BuildContext context) {
 
     var style = const TextStyle(fontSize: 60);
-    print("build");
     return Material(
         type: MaterialType.transparency,
         child: SafeArea(
diff --git a/example/lib/02_object_apply_sample/main.dart b/example/lib/02_object_apply_sample/main.dart
index 1842b44..f35e3db 100644
--- a/example/lib/02_object_apply_sample/main.dart
+++ b/example/lib/02_object_apply_sample/main.dart
@@ -14,13 +14,17 @@ class Human{
 
   @override
   int get hashCode => (name.hashCode) * age.hashCode;
+
+  @override
+  bool operator ==(Object other) => hashCode==other.hashCode;
 }
 
 void main() {
-  runApp(MyApp());
+  runApp(const MyApp());
 }
 
 class MyApp extends StatelessWidget {
+  const MyApp({Key? key}) : super(key: key);
 
   @override
   Widget build(BuildContext context) {
@@ -28,7 +32,7 @@ class MyApp extends StatelessWidget {
     return MaterialApp(
         theme: ThemeData(fontFamily: 'IranSans'),
         debugShowCheckedModeBanner: false,
-        home: ObjectApplySampleLayout()
+        home: const ObjectApplySampleLayout()
     );
   }
 }
diff --git a/example/lib/02_object_apply_sample/object_apply_sample.dart b/example/lib/02_object_apply_sample/object_apply_sample.dart
index 109be9c..3474e54 100644
--- a/example/lib/02_object_apply_sample/object_apply_sample.dart
+++ b/example/lib/02_object_apply_sample/object_apply_sample.dart
@@ -1,9 +1,10 @@
 import 'package:app/02_object_apply_sample/main.dart';
 import 'package:flutter/material.dart';
-import 'package:telescope/src/telescope.dart';
+import 'package:telescope/telescope.dart';
 
 
 class ObjectApplySampleLayout extends StatefulWidget {
+  const ObjectApplySampleLayout({Key? key}) : super(key: key);
 
   @override
   State<ObjectApplySampleLayout> createState() => ObjectApplySampleLayoutState();
@@ -15,8 +16,6 @@ class ObjectApplySampleLayoutState extends State<ObjectApplySampleLayout> {
 
   @override
   Widget build(BuildContext context) {
-
-    print("build");
     return Material(
         type: MaterialType.transparency,
         child: SafeArea(
diff --git a/example/lib/03_depend_observable_sample/depends_on_sample.dart b/example/lib/03_depend_observable_sample/depends_on_sample.dart
index c2a3b39..fdb15ee 100644
--- a/example/lib/03_depend_observable_sample/depends_on_sample.dart
+++ b/example/lib/03_depend_observable_sample/depends_on_sample.dart
@@ -1,8 +1,10 @@
 import 'package:flutter/material.dart';
-import 'package:telescope/src/telescope.dart';
+import 'package:telescope/telescope.dart';
 
 
 class DependObservableSampleLayout extends StatefulWidget {
+  const DependObservableSampleLayout({Key? key}) : super(key: key);
+
   @override
   State<DependObservableSampleLayout> createState() => DependObservableSampleLayoutState();
 }
@@ -35,7 +37,6 @@ class DependObservableSampleLayoutState extends State<DependObservableSampleLayo
   Widget build(BuildContext context) {
 
     var style = const TextStyle(fontSize: 40);
-    print("build");
     return Material(
         type: MaterialType.transparency,
         child: SafeArea(
diff --git a/example/lib/03_depend_observable_sample/main.dart b/example/lib/03_depend_observable_sample/main.dart
index 8b43bb7..833bcb1 100644
--- a/example/lib/03_depend_observable_sample/main.dart
+++ b/example/lib/03_depend_observable_sample/main.dart
@@ -2,10 +2,12 @@ import 'package:app/03_depend_observable_sample/depends_on_sample.dart';
 import 'package:flutter/material.dart';
 
 void main() {
-  runApp(MyApp());
+  runApp(const MyApp());
 }
 
 class MyApp extends StatelessWidget {
+  const MyApp({Key? key}) : super(key: key);
+
 
   @override
   Widget build(BuildContext context) {
@@ -13,7 +15,7 @@ class MyApp extends StatelessWidget {
     return MaterialApp(
         theme: ThemeData(fontFamily: 'IranSans'),
         debugShowCheckedModeBanner: false,
-        home: DependObservableSampleLayout()
+        home: const DependObservableSampleLayout()
     );
   }
 }
diff --git a/example/lib/04_1_save_on_disk_sample/main.dart b/example/lib/04_1_save_on_disk_sample/main.dart
index 69b6b9f..956d6b2 100644
--- a/example/lib/04_1_save_on_disk_sample/main.dart
+++ b/example/lib/04_1_save_on_disk_sample/main.dart
@@ -2,10 +2,11 @@ import 'package:flutter/material.dart';
 import './save_on_disk_sample.dart';
 
 void main() {
-  runApp(MyApp());
+  runApp(const MyApp());
 }
 
 class MyApp extends StatelessWidget {
+  const MyApp({Key? key}) : super(key: key);
 
   @override
   Widget build(BuildContext context) {
@@ -13,7 +14,7 @@ class MyApp extends StatelessWidget {
     return MaterialApp(
         theme: ThemeData(fontFamily: 'IranSans'),
         debugShowCheckedModeBanner: false,
-        home: SaveOnDiskSampleLayout()
+        home: const SaveOnDiskSampleLayout()
     );
   }
 }
diff --git a/example/lib/04_1_save_on_disk_sample/save_on_disk_sample.dart b/example/lib/04_1_save_on_disk_sample/save_on_disk_sample.dart
index 3bb222b..32c45a2 100644
--- a/example/lib/04_1_save_on_disk_sample/save_on_disk_sample.dart
+++ b/example/lib/04_1_save_on_disk_sample/save_on_disk_sample.dart
@@ -1,8 +1,10 @@
 import 'package:flutter/material.dart';
-import 'package:telescope/src/telescope.dart';
+import 'package:telescope/telescope.dart';
 
 
 class SaveOnDiskSampleLayout extends StatefulWidget {
+  const SaveOnDiskSampleLayout({Key? key}) : super(key: key);
+
   @override
   State<SaveOnDiskSampleLayout> createState() => SaveOnDiskSampleLayoutState();
 }
@@ -26,7 +28,6 @@ class SaveOnDiskSampleLayoutState extends State<SaveOnDiskSampleLayout> {
   Widget build(BuildContext context) {
 
     var style = const TextStyle(fontSize: 40);
-    print("build");
     return Material(
         type: MaterialType.transparency,
         child: SafeArea(
diff --git a/example/lib/04_2_save_non_built_in_on_disk/main.dart b/example/lib/04_2_save_non_built_in_on_disk/main.dart
index aa39e4c..721ce77 100644
--- a/example/lib/04_2_save_non_built_in_on_disk/main.dart
+++ b/example/lib/04_2_save_non_built_in_on_disk/main.dart
@@ -2,10 +2,11 @@ import 'package:flutter/material.dart';
 import './save_non_built_in_on_disk_sample.dart';
 
 void main() {
-  runApp(MyApp());
+  runApp(const MyApp());
 }
 
 class MyApp extends StatelessWidget {
+  const MyApp({Key? key}) : super(key: key);
 
   @override
   Widget build(BuildContext context) {
@@ -13,7 +14,7 @@ class MyApp extends StatelessWidget {
     return MaterialApp(
         theme: ThemeData(fontFamily: 'IranSans'),
         debugShowCheckedModeBanner: false,
-        home: SaveNonBuiltInOnDiskSampleLayout()
+        home: const SaveNonBuiltInOnDiskSampleLayout()
     );
   }
 }
diff --git a/example/lib/04_2_save_non_built_in_on_disk/save_non_built_in_on_disk_sample.dart b/example/lib/04_2_save_non_built_in_on_disk/save_non_built_in_on_disk_sample.dart
index e31faf3..d6dd429 100644
--- a/example/lib/04_2_save_non_built_in_on_disk/save_non_built_in_on_disk_sample.dart
+++ b/example/lib/04_2_save_non_built_in_on_disk/save_non_built_in_on_disk_sample.dart
@@ -8,6 +8,9 @@ class Human{
 
   @override
   int get hashCode => height*weight;
+
+  @override
+  bool operator ==(Object other) => hashCode==other.hashCode;
 }
 class HumanOnDiskAbility implements OnDiskSaveAbility<Human>{
   @override
@@ -22,6 +25,8 @@ class HumanOnDiskAbility implements OnDiskSaveAbility<Human>{
 
 
 class SaveNonBuiltInOnDiskSampleLayout extends StatefulWidget {
+  const SaveNonBuiltInOnDiskSampleLayout({Key? key}) : super(key: key);
+
   @override
   State<SaveNonBuiltInOnDiskSampleLayout> createState() => SaveNonBuiltInOnDiskSampleLayoutState();
 }
@@ -44,7 +49,6 @@ class SaveNonBuiltInOnDiskSampleLayoutState extends State<SaveNonBuiltInOnDiskSa
   Widget build(BuildContext context) {
 
     var style = const TextStyle(fontSize: 40);
-    print("build");
     return Material(
         type: MaterialType.transparency,
         child: SafeArea(
diff --git a/example/lib/05_share_telescope_as_param/input_child.dart b/example/lib/05_share_telescope_as_param/input_child.dart
index 6c7f30b..63ee4c4 100644
--- a/example/lib/05_share_telescope_as_param/input_child.dart
+++ b/example/lib/05_share_telescope_as_param/input_child.dart
@@ -1,10 +1,10 @@
 import 'package:flutter/material.dart';
-import 'package:telescope/src/telescope.dart';
+import 'package:telescope/telescope.dart';
 
 class InputLayout extends StatefulWidget {
 
-  Telescope<String> text;
-  InputLayout(this.text);
+  final Telescope<String> text;
+  const InputLayout(this.text, {Key? key}) : super(key: key);
 
   @override
   State<InputLayout> createState() => InputLayoutState();
@@ -14,8 +14,6 @@ class InputLayoutState extends State<InputLayout> {
 
   @override
   Widget build(BuildContext context) {
-
-    print("input build");
     return TextField(
       controller: TextEditingController(text: ""),
       onChanged: (content){
diff --git a/example/lib/05_share_telescope_as_param/main.dart b/example/lib/05_share_telescope_as_param/main.dart
index 500c32a..d4deee6 100644
--- a/example/lib/05_share_telescope_as_param/main.dart
+++ b/example/lib/05_share_telescope_as_param/main.dart
@@ -2,10 +2,11 @@ import 'package:app/05_share_telescope_as_param/parent.dart';
 import 'package:flutter/material.dart';
 
 void main() {
-  runApp(MyApp());
+  runApp(const MyApp());
 }
 
 class MyApp extends StatelessWidget {
+  const MyApp({Key? key}) : super(key: key);
 
   @override
   Widget build(BuildContext context) {
@@ -13,7 +14,7 @@ class MyApp extends StatelessWidget {
     return MaterialApp(
         theme: ThemeData(fontFamily: 'IranSans'),
         debugShowCheckedModeBanner: false,
-        home: ParentLayout()
+        home: const ParentLayout()
     );
   }
 }
diff --git a/example/lib/05_share_telescope_as_param/output_child.dart b/example/lib/05_share_telescope_as_param/output_child.dart
index bcedafb..7cfe2fc 100644
--- a/example/lib/05_share_telescope_as_param/output_child.dart
+++ b/example/lib/05_share_telescope_as_param/output_child.dart
@@ -1,10 +1,10 @@
 import 'package:flutter/material.dart';
-import 'package:telescope/src/telescope.dart';
+import 'package:telescope/telescope.dart';
 
 class OutputLayout extends StatefulWidget {
 
-  Telescope<String> text;
-  OutputLayout(this.text);
+  final Telescope<String> text;
+  const OutputLayout(this.text, {Key? key}) : super(key: key);
 
   @override
   State<OutputLayout> createState() => OutputLayoutState();
@@ -14,8 +14,6 @@ class OutputLayoutState extends State<OutputLayout> {
 
   @override
   Widget build(BuildContext context) {
-
-    print("output build");
     return Text(widget.text.watch(this));
   }
 }
diff --git a/example/lib/05_share_telescope_as_param/parent.dart b/example/lib/05_share_telescope_as_param/parent.dart
index e455320..533aa0a 100644
--- a/example/lib/05_share_telescope_as_param/parent.dart
+++ b/example/lib/05_share_telescope_as_param/parent.dart
@@ -5,6 +5,8 @@ import 'package:telescope/telescope.dart';
 
 
 class ParentLayout extends StatefulWidget {
+  const ParentLayout({Key? key}) : super(key: key);
+
   @override
   State<ParentLayout> createState() => ParentLayoutState();
 }
@@ -15,8 +17,6 @@ class ParentLayoutState extends State<ParentLayout> {
 
   @override
   Widget build(BuildContext context) {
-
-    print("parent build");
     return Material(
         type: MaterialType.transparency,
         child: SafeArea(
diff --git a/example/lib/06_1_list/list_sample.dart b/example/lib/06_1_list/list_sample.dart
index 4940d53..f1e9b08 100644
--- a/example/lib/06_1_list/list_sample.dart
+++ b/example/lib/06_1_list/list_sample.dart
@@ -1,10 +1,11 @@
 import 'package:flutter/material.dart';
-import 'package:telescope/src/telescope.dart';
 import 'package:telescope/telescope.dart';
 import 'dart:math';
 
 
 class ListSampleLayout extends StatefulWidget {
+  const ListSampleLayout({Key? key}) : super(key: key);
+
   @override
   State<ListSampleLayout> createState() => ListSampleLayoutState();
 }
@@ -30,7 +31,6 @@ class ListSampleLayoutState extends State<ListSampleLayout> {
   @override
   Widget build(BuildContext context) {
 
-    print("build");
     return Material(
         type: MaterialType.transparency,
         child: SafeArea(
diff --git a/example/lib/06_1_list/main.dart b/example/lib/06_1_list/main.dart
index 84351bb..966cda7 100644
--- a/example/lib/06_1_list/main.dart
+++ b/example/lib/06_1_list/main.dart
@@ -2,10 +2,12 @@ import './list_sample.dart';
 import 'package:flutter/material.dart';
 
 void main() {
-  runApp(MyApp());
+  runApp(const MyApp());
 }
 
 class MyApp extends StatelessWidget {
+  const MyApp({Key? key}) : super(key: key);
+
 
   @override
   Widget build(BuildContext context) {
@@ -13,7 +15,7 @@ class MyApp extends StatelessWidget {
     return MaterialApp(
         theme: ThemeData(fontFamily: 'IranSans'),
         debugShowCheckedModeBanner: false,
-        home: ListSampleLayout()
+        home: const ListSampleLayout()
     );
   }
 }
diff --git a/example/lib/06_2_list_on_disk/list_sample_on_disk.dart b/example/lib/06_2_list_on_disk/list_sample_on_disk.dart
index 15a33db..e356fb8 100644
--- a/example/lib/06_2_list_on_disk/list_sample_on_disk.dart
+++ b/example/lib/06_2_list_on_disk/list_sample_on_disk.dart
@@ -1,10 +1,11 @@
 import 'package:flutter/material.dart';
-import 'package:telescope/src/telescope.dart';
 import 'package:telescope/telescope.dart';
 import 'dart:math';
 
 
 class ListSampleOnDiskLayout extends StatefulWidget {
+  const ListSampleOnDiskLayout({Key? key}) : super(key: key);
+
   @override
   State<ListSampleOnDiskLayout > createState() => ListSampleOnDiskLayoutState();
 }
@@ -29,8 +30,6 @@ class ListSampleOnDiskLayoutState extends State<ListSampleOnDiskLayout > {
 
   @override
   Widget build(BuildContext context) {
-
-    print("build");
     return Material(
         type: MaterialType.transparency,
         child: SafeArea(
diff --git a/example/lib/06_2_list_on_disk/main.dart b/example/lib/06_2_list_on_disk/main.dart
index 033a697..1a076d0 100644
--- a/example/lib/06_2_list_on_disk/main.dart
+++ b/example/lib/06_2_list_on_disk/main.dart
@@ -2,10 +2,12 @@ import './list_sample_on_disk.dart';
 import 'package:flutter/material.dart';
 
 void main() {
-  runApp(MyApp());
+  runApp(const MyApp());
 }
 
 class MyApp extends StatelessWidget {
+  const MyApp({Key? key}) : super(key: key);
+
 
   @override
   Widget build(BuildContext context) {
@@ -13,7 +15,7 @@ class MyApp extends StatelessWidget {
     return MaterialApp(
         theme: ThemeData(fontFamily: 'IranSans'),
         debugShowCheckedModeBanner: false,
-        home: ListSampleOnDiskLayout()
+        home: const ListSampleOnDiskLayout()
     );
   }
 }
diff --git a/example/lib/06_3_non_built_in_list_on_disk/list_non_built_in_on_disk_sample.dart b/example/lib/06_3_non_built_in_list_on_disk/list_non_built_in_on_disk_sample.dart
index f919f5b..0e8f68c 100644
--- a/example/lib/06_3_non_built_in_list_on_disk/list_non_built_in_on_disk_sample.dart
+++ b/example/lib/06_3_non_built_in_list_on_disk/list_non_built_in_on_disk_sample.dart
@@ -1,5 +1,4 @@
 import 'package:flutter/material.dart';
-import 'package:telescope/src/telescope.dart';
 import 'package:telescope/telescope.dart';
 
 class Contact{
@@ -9,6 +8,9 @@ class Contact{
 
   @override
   int get hashCode => name.hashCode * phone.hashCode;
+
+  @override
+  bool operator ==(Object other)=> hashCode==other.hashCode;
 }
 class ContactOnDiskAbility implements OnDiskSaveAbility<Contact>{
   @override
@@ -22,6 +24,8 @@ class ContactOnDiskAbility implements OnDiskSaveAbility<Contact>{
 }
 
 class ListNonBuiltInOnDiskSample extends StatefulWidget {
+  const ListNonBuiltInOnDiskSample({Key? key}) : super(key: key);
+
   @override
   State<ListNonBuiltInOnDiskSample > createState() => ListNonBuiltInOnDiskSampleState();
 }
@@ -50,8 +54,6 @@ class ListNonBuiltInOnDiskSampleState extends State<ListNonBuiltInOnDiskSample>
 
   @override
   Widget build(BuildContext context) {
-
-    print("build");
     return Material(
         type: MaterialType.transparency,
         child: SafeArea(
diff --git a/example/lib/06_3_non_built_in_list_on_disk/main.dart b/example/lib/06_3_non_built_in_list_on_disk/main.dart
index 743c831..64a11c8 100644
--- a/example/lib/06_3_non_built_in_list_on_disk/main.dart
+++ b/example/lib/06_3_non_built_in_list_on_disk/main.dart
@@ -2,10 +2,12 @@ import './list_non_built_in_on_disk_sample.dart';
 import 'package:flutter/material.dart';
 
 void main() {
-  runApp(MyApp());
+  runApp(const MyApp());
 }
 
 class MyApp extends StatelessWidget {
+  const MyApp({Key? key}) : super(key: key);
+
 
   @override
   Widget build(BuildContext context) {
@@ -13,7 +15,7 @@ class MyApp extends StatelessWidget {
     return MaterialApp(
         theme: ThemeData(fontFamily: 'IranSans'),
         debugShowCheckedModeBanner: false,
-        home: ListNonBuiltInOnDiskSample()
+        home: const ListNonBuiltInOnDiskSample()
     );
   }
 }
diff --git a/example/lib/07_multi_language_and_theme/i18n.dart b/example/lib/07_multi_language_and_theme/i18n.dart
index a31d4ae..f862c59 100644
--- a/example/lib/07_multi_language_and_theme/i18n.dart
+++ b/example/lib/07_multi_language_and_theme/i18n.dart
@@ -4,15 +4,15 @@ import 'package:telescope/telescope.dart';
 
 // I18 is actually short form of "Internationalization"
 class I18n{
-  static const ENGLISH = "en";
-  static const PERSIAN = "pe";
+  static const english = "en";
+  static const persian = "pe";
 
-  static var language = Telescope.saveOnDiskForBuiltInType(ENGLISH, "app_language");
+  static var language = Telescope.saveOnDiskForBuiltInType(english, "app_language");
 
   static toggleLanguage(){
-    language.value = language.value==ENGLISH ? PERSIAN : ENGLISH;
+    language.value = language.value==english ? persian : english;
   }
 
-  static var hello = Telescope.dependsOn([language],()=>language.value==ENGLISH ? "hello" : "سلام");
-  static var bye = Telescope.dependsOn([language],()=>language.value==ENGLISH ? "bye" : "خدانگهدار");
+  static var hello = Telescope.dependsOn([language],()=>language.value==english ? "hello" : "سلام");
+  static var bye = Telescope.dependsOn([language],()=>language.value==english ? "bye" : "خدانگهدار");
 }
\ No newline at end of file
diff --git a/example/lib/07_multi_language_and_theme/main.dart b/example/lib/07_multi_language_and_theme/main.dart
index f62ab70..38a9b0c 100644
--- a/example/lib/07_multi_language_and_theme/main.dart
+++ b/example/lib/07_multi_language_and_theme/main.dart
@@ -2,10 +2,12 @@ import './multi_language_and_theme.dart';
 import 'package:flutter/material.dart';
 
 void main() {
-  runApp(MyApp());
+  runApp(const MyApp());
 }
 
 class MyApp extends StatelessWidget {
+  const MyApp({Key? key}) : super(key: key);
+
 
   @override
   Widget build(BuildContext context) {
@@ -13,7 +15,7 @@ class MyApp extends StatelessWidget {
     return MaterialApp(
         theme: ThemeData(fontFamily: 'IranSans'),
         debugShowCheckedModeBanner: false,
-        home: MultiLanguageAndThemeSample()
+        home: const MultiLanguageAndThemeSample()
     );
   }
 }
diff --git a/example/lib/07_multi_language_and_theme/multi_language_and_theme.dart b/example/lib/07_multi_language_and_theme/multi_language_and_theme.dart
index 630ba1d..c816d11 100644
--- a/example/lib/07_multi_language_and_theme/multi_language_and_theme.dart
+++ b/example/lib/07_multi_language_and_theme/multi_language_and_theme.dart
@@ -3,6 +3,8 @@ import 'package:app/07_multi_language_and_theme/theme.dart';
 import 'package:flutter/material.dart';
 
 class MultiLanguageAndThemeSample extends StatefulWidget {
+  const MultiLanguageAndThemeSample({Key? key}) : super(key: key);
+
   @override
   State<MultiLanguageAndThemeSample > createState() => MultiLanguageAndThemeSampleState();
 }
@@ -11,8 +13,6 @@ class MultiLanguageAndThemeSampleState extends State<MultiLanguageAndThemeSample
 
   @override
   Widget build(BuildContext context) {
-
-    print("build");
     return Material(
         type: MaterialType.transparency,
         child: SafeArea(
diff --git a/example/lib/main.dart b/example/lib/main.dart
index 9c56306..f08b848 100644
--- a/example/lib/main.dart
+++ b/example/lib/main.dart
@@ -1,5 +1,5 @@
 
 
 void main(){
-  print("every example has a main function. run them");
+  // every example has a main function. run them
 }
\ No newline at end of file
diff --git a/lib/src/fs/save_and_load.dart b/lib/src/fs/save_and_load.dart
index d68eb65..2228597 100644
--- a/lib/src/fs/save_and_load.dart
+++ b/lib/src/fs/save_and_load.dart
@@ -5,11 +5,11 @@ import 'on_disk_save_ability.dart';
 
 class SaveAndLoad{
 
-  static const String PREFIX = "TELESCOPE_";
+  static const String prefix = "TELESCOPE_";
 
   static save<T>(String onDiskId, T value, OnDiskSaveAbility<T>? onDiskSaveAbility){
 
-    onDiskId += PREFIX;
+    onDiskId += prefix;
 
     SharedPreferences.getInstance().then((pref){
       switch(T){
@@ -29,7 +29,7 @@ class SaveAndLoad{
 
   static load<T>(OnDiskSaveAbility<T>? onDiskSaveAbility, String onDiskId, void Function(T loaded) callback){
 
-    onDiskId += PREFIX;
+    onDiskId += prefix;
     SharedPreferences.getInstance().then((pref){
 
       // not assign while its not on disk yet (keeps default value)
@@ -52,10 +52,10 @@ class SaveAndLoad{
 
   // list save and load
 
-  static const String SEP = '~';
+  static const String sep = '~';
   static saveList<T>(String onDiskId, List<T> items, OnDiskSaveAbility<T>? onDiskSaveAbility){
 
-    onDiskId += PREFIX;
+    onDiskId += prefix;
 
     var stringifies = items.map((i){
       var itemString = "";
@@ -64,8 +64,8 @@ class SaveAndLoad{
       }else{
         itemString = i.toString();
       }
-      return itemString.replaceAll(SEP, "\\$SEP");
-    }).join("-$SEP");
+      return itemString.replaceAll(sep, "\\$sep");
+    }).join("-$sep");
     SharedPreferences.getInstance().then((pref){
       pref.setString(onDiskId, stringifies).then((value){});
     });
@@ -73,13 +73,13 @@ class SaveAndLoad{
 
   static loadList<T>(String onDiskId, OnDiskSaveAbility<T>? onDiskSaveAbility, void Function(List<T> loaded) callback){
 
-    onDiskId += PREFIX;
+    onDiskId += prefix;
 
     SharedPreferences.getInstance().then((pref){
       if(!pref.containsKey(onDiskId)){ return; }
       callback(
-          pref.getString(onDiskId)!.split("-$SEP").map((i){
-            i = i.replaceAll("\\$SEP", SEP);
+          pref.getString(onDiskId)!.split("-$sep").map((i){
+            i = i.replaceAll("\\$sep", sep);
             switch(T){
               case bool: return (i == "true") as T;
               case int: return (int.parse(i)) as T;
diff --git a/lib/src/telescope.dart b/lib/src/telescope.dart
index 7fa48d9..8d670f6 100644
--- a/lib/src/telescope.dart
+++ b/lib/src/telescope.dart
@@ -129,9 +129,7 @@ class Telescope<T>{
         try{
           // it may crash while widget is not mounted
           callback((){});
-        } catch(e) {
-          print(e);
-        }
+        } catch(e) {/*ignore*/}
       }else{
         callback(); // this will make State call build in next frame render
       }
diff --git a/pubspec.yaml b/pubspec.yaml
index b4bc354..d0af841 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -2,6 +2,7 @@ name: telescope
 description: A simple and easy to use state manager for flutter.
 version: 1.0.0
 repository: https://github.com/ali77gh/Telescope
+homepage: https://github.com/ali77gh/Telescope
 
 environment:
   sdk: ">=2.17.0 <3.0.0"
@@ -17,46 +18,4 @@ dev_dependencies:
     sdk: flutter
   flutter_lints: ^2.0.0
 
-# For information on the generic Dart part of this file, see the
-# following page: https://dart.dev/tools/pub/pubspec
-
-# The following section is specific to Flutter packages.
 flutter:
-  plugin:
-    platforms:
-      linux:
-      windows:
-      macos:
-      android:
-      web:
-      ios:
-  # To add assets to your package, add an assets section, like this:
-  # assets:
-  #   - images/a_dot_burr.jpeg
-  #   - images/a_dot_ham.jpeg
-  #
-  # For details regarding assets in packages, see
-  # https://flutter.dev/assets-and-images/#from-packages
-  #
-  # An image asset can refer to one or more resolution-specific "variants", see
-  # https://flutter.dev/assets-and-images/#resolution-aware
-
-  # To add custom fonts to your package, add a fonts section here,
-  # in this "flutter" section. Each entry in this list should have a
-  # "family" key with the font family name, and a "fonts" key with a
-  # list giving the asset and other descriptors for the font. For
-  # example:
-  # fonts:
-  #   - family: Schyler
-  #     fonts:
-  #       - asset: fonts/Schyler-Regular.ttf
-  #       - asset: fonts/Schyler-Italic.ttf
-  #         style: italic
-  #   - family: Trajan Pro
-  #     fonts:
-  #       - asset: fonts/TrajanPro.ttf
-  #       - asset: fonts/TrajanPro_Bold.ttf
-  #         weight: 700
-  #
-  # For details regarding fonts in packages, see
-  # https://flutter.dev/custom-fonts/#from-packages
diff --git a/test/telescope_test.dart b/test/telescope_test.dart
index 66ae971..2996b37 100644
--- a/test/telescope_test.dart
+++ b/test/telescope_test.dart
@@ -1,5 +1,3 @@
-import 'package:flutter/material.dart';
-import 'package:flutter_test/flutter_test.dart';
 
 // void main() {
 //   test('adds one to input values', () {