#鸿蒙通关秘籍#如何使用Profiler的Allocation内存分析器优化页面切换？

class MyDataSource implements IDataSource {
 private list: number[] = [];

 constructor(list: number[]) {
  this.list = list;
 }

 totalCount(): number {
  return this.list.length;
 }

 getData(index: number): number {
  return this.list[index];
 }

 registerDataChangeListener(_: DataChangeListener): void {}

 unregisterDataChangeListener(): void {}
}
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