remove cache support

Author: hackw

README.md

@@ -563,14 +563,6 @@ class OffBuildExample extends StatelessWidget {
    wrapContent will be re-layout. And since the constraints passed to other child elements won't
    change, no real re-layout will be triggered.
 
-4. By default, constraints are not recalculated during layout if the constraints of child elements
-   do not change. Even the constraint computation is extremely fast. But when the ListView is swiped
-   quickly, constraints are calculated for each item layout process, even though the constraints of
-   these items may not change. This is not necessary. At this point ChildConstraintsCache can be
-   used to optimize it so that constraints for entries of the same type are computed only once.
-   Refer to example/complex_list.dart. Constraints can also be calculated ahead of time so that they
-   don't need to be calculated during layout. Refer to example/preprocess_complex_list.dart.
-
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 If it helps you a lot, consider sponsoring me a cup of milk tea.

example/complex_list.dart

@@ -21,8 +21,6 @@ class ComplexListExample extends StatelessWidget {
       Colors.pink,
     ];
 
-    ChildConstraintsCache childConstraintsCache = ChildConstraintsCache();
-
     return Scaffold(
       appBar: const CustomAppBar(
         title: 'ComplexList',
@@ -41,8 +39,6 @@ class ComplexListExample extends StatelessWidget {
             );
           }
           return ConstraintLayout(
-            useCacheConstraints: true,
-            childConstraintsCache: childConstraintsCache,
             children: [
               Container(
                 color: colors[index % 6],

example/home.dart

@@ -4,7 +4,6 @@ import 'badge.dart';
 import 'barrier.dart';
 import 'complex_list.dart';
 import 'guideline.dart';
-import 'preprocess_complex_list.dart';
 import 'summary.dart';
 
 class ExampleHome extends StatelessWidget {
@@ -38,9 +37,6 @@ class ExampleHome extends StatelessWidget {
           button('ComplexList', () {
             push(context, const ComplexListExample());
           }),
-          button('PreprocessComplexList', () {
-            push(context, const PreprocessComplexListExample());
-          }),
           button('Badge', () {
             push(context, const BadgeExample());
           }),