带或不带括号的新列表 [英] new List with or without parentheses

问题描述

您好，专家，

我们可以通过两种类似的方式来创建已知字节的列表:

Hi experts,

we can create a list of known bytes in two similar ways:

List<byte> withParentheses = new List<byte>() {1,2,3,4,5};
List<byte> withoutParentheses = new List<byte> {6,7,8,9,10};

两者似乎都有效.

两者有什么区别?

Both seem to work.

What is the difference between the two?
Is one of them preferrable over the other?

推荐答案

就您的示例而言，什么都不是.

在第一种情况下，您实际上可以在第一条语句中定义数组计数，但稍后再为其添加值.
例如
列出< byte> withParentheses =新列表< byte> [4];
withParentheses [0] = 1;
withParentheses [1] = 2;

在第二种情况下，您没有这种自由.您必须在数组中定义一些初始值(已完成).

Nothing, as far as your example is concerned.

In the first case, you could actually define the array count in the first statement but add values to it later.
E.g.
List<byte> withParentheses = new List<byte>[4];
withParentheses[0]=1;
withParentheses[1]=2;

In the second case, you don''t have that liberty. You must define some initial values in the array (as you have done).

这可能会有所帮助，

CSharp 3 0概述 [

It might be helpful,

CSharp 3 0overview[^]

:)

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