Initial commit

lib/core/extension/extension.dart

@@ -0,0 +1,13 @@
+extension SliverCountExtension on int {
+  int get doubleTheListCount => (this * 2) - 1;
+
+  int get exactIndex => (this ~/ 2);
+
+  int get lastIndex => (this * 2) - 2;
+}
+
+extension VersionParsing on String {
+  int toVersion() {
+    return int.tryParse(replaceAll(".", "")) ?? 0;
+  }
+}