Mark the selected item

Hello,

is it possible here to mark the selected item.
a
Only single select should be possible. The mark has to be shown on the left of the item.

  <ion-list>
    <ion-item-sliding *ngFor="let item of items">
      <ion-item>
        {{ item }}
      </ion-item>

      <ion-item-options>
        <button danger (click)="removeItem(item)"><ion-icon name="trash"></ion-icon></button>
      </ion-item-options>
    </ion-item-sliding>
  </ion-list>