在 C# 中，我应该使用 string.Empty 还是 String.Empty 或“"?初始化一个字符串? [英] In C#, should I use string.Empty or String.Empty or "" to intitialize a string?

问题描述

在 C# 中，我想用一个空字符串初始化一个字符串值.

In C#, I want to initialize a string value with an empty string.

我该怎么做?什么是正确的方法，为什么?

How should I do this? What is the right way, and why?

string willi = string.Empty;

或

string willi = String.Empty;

或

string willi = "";

还是什么?

推荐答案

使用您和您的团队认为最具可读性的任何内容.

其他答案表明每次使用 "" 时都会创建一个新字符串.这不是真的 - 由于字符串实习，它将在每个程序集或每个 AppDomain 中创建一次(或者可能在整个过程中创建一次 - 在这方面不确定).这种差异可以忽略不计 - 很大，很大微不足道.

Other answers have suggested that a new string is created every time you use "". This is not true - due to string interning, it will be created either once per assembly or once per AppDomain (or possibly once for the whole process - not sure on that front). This difference is negligible - massively, massively insignificant.

然而，你觉得哪个更具可读性是另一回事.这是主观的，会因人而异——所以我建议你找出你团队中大多数人喜欢什么，然后为了一致性而一致.我个人觉得 "" 更容易阅读.

Which you find more readable is a different matter, however. It's subjective and will vary from person to person - so I suggest you find out what most people on your team like, and all go with that for consistency. Personally I find "" easier to read.

"" 和 " " 很容易被误认为是彼此的论点并没有真正让我感到满意.除非您使用的是比例字体(而且我还没有与任何 开发人员合作过)，否则很容易区分.

The argument that "" and " " are easily mistaken for each other doesn't really wash with me. Unless you're using a proportional font (and I haven't worked with any developers who do) it's pretty easy to tell the difference.

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