C# 引用赋值运算符? [英] C# reference assignment operator?

问题描述

例如:

        int x = 1;
        int y = x;
        y = 3;
        Debug.WriteLine(x.ToString());

是第3行的任何引用运算符而不是="吗，使 x 等于 3 ，如果我分配 y =3 .

Is it any reference operator instead of "=" on line:3, to make the x equal to 3 , if i assign y =3 .

推荐答案

'int' 是一种值类型，因此正如您所发现的那样，复制赋值时的值.

'int' is a value type and so copies the value on assignment, as you have discovered.

您可以通过使用不安全"块来使用传统 C/C++ 意义上的指针，但是指针只能在限制其使用的块内使用.相反，如果您想访问不安全"块之外的值，则需要转换为使用引用.

You could use pointers in the traditional C/C++ sense by using an 'unsafe' block but then the pointers are only usable inside that block which limits its use. If instead you want to access the value outside of an 'unsafe' block then you need to convert to using a reference instead.

这样的东西...

var x = new Tuple<int>(1);
var y = x;
y.Item1 = 3;

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