Improving the user experience 改善用户体验There are a few small features I’d like to add, just to polish the app a little more. After all, you’re building a real app here – if you want to make top-notch apps, you have to pay attention to those details.我想添加一些小功能以让我们的应用更加完美。毕竟,你正在构建一个真正的应用程序——如果你想做一流的应用程序,你必须注意这些细节。Showing the number of to-do items remaining 显示剩下待办事项的数量A short diversion into Functional Programming Sorting the lists 排序Adding icons to the checklists
