逐字字符串v转义序列 [英] Verbatim string literals v escape sequences

问题描述

有没有任何区别如何C＃编译器或.NET运行时处理逐字字符串与使用转义序列（即性能）还是只是设计时间样式的事？例如：

Is there any difference in how the C# compiler or .NET run-time handles verbatim string literals versus using escape sequences (i.e. performance) or is it just a matter of design time style? E.G.:

var pathA = "c:\\somewhere";
var pathB = @"c:\somewhere";

我会想象它们被编译相同，也没关系，但只是好奇。

I would imagine they are compiled the same and it doesn't matter, but was just curious.

推荐答案

在这里的任何差异被严格限制编译器;白细胞介素和运行时有逐字VS没有概念逃脱 - 它只是具有的字符串的

Any difference here is limited strictly to the compiler; the IL and runtime have no concept of verbatim vs escaped - it just has the string.

至于可供选择：取其更方便，P我几乎总是使用逐字字符串，如果有特殊字符，作为能够多行字符串很容易和视觉

As for which to choose: whichever is more convenient ;p I almost always use verbatim string literals if there are unusual characters, as that allows for multi-line strings very easily and visually.

作为一个有趣的例子：

bool areSame = ReferenceEquals("c:\\somewhere", @"c:\somewhere"); // true

它告诉是他们的究竟的相同的字符串实例（感谢实习）。他们不只是相当于的;他们的相同的字符串实例应用于运行。因此，它是<青霉>不可能的，它们可以是（到运行时）以任何方式不同。

which tells are they are exactly the same string instance (thanks to "interning"). They aren't just equivalent; they are the same string instance to the runtime. It is therefore impossible that they can be (to the runtime) different in any way.

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