如何使用ngFor ionic隐藏未使用的项目？

<ion-list>
  <ion-item *ngFor="let project of projects" [hidden]="!project.used">
    {{ project.name }}
  </ion-item>
</ion-list>

import { Component } from '@angular/core';

@Component({
  selector: 'app-project-list',
  templateUrl: 'project-list.page.html',
  styleUrls: ['project-list.page.scss'],
})
export class ProjectListPage {
  projects: any[];

  constructor() {
    // 假设从数据库或API获取项目列表数据
    this.projects = [
      { name: '项目1', used: true },
      { name: '项目2', used: false },
      { name: '项目3', used: true },
      { name: '项目4', used: false },
    ];
  }
}