如何在Dart中创建一个空列表

如何在Dart中创建一个空列表

问题描述:

我想为Flutter项目创建一个空列表.

I want to create an empty list for a Flutter project.

final prefs = await SharedPreferences.getInstance();
final myStringList = prefs.getStringList('my_string_list_key') ?? <empty list>;

我似乎记得有多种方法,但有一种推荐的方法.我该怎么办?

I seem to remember there are multiple ways but one recommended way. How do I do it?

有几种方法可以在Dart中创建空列表:

There are a few ways to create an empty list in Dart:

[]
List()
<String>[]
List<String>()

但是,有效《 Dart使用指南》 建议这样做:

[]

或者如果您需要指定类型,则此:

Or if you need to specify the type, then this:

<String>[]