[英]Array reference in classes in C#
i have an array and want to create two classes that contains the reference of this array. 我有一个数组,想创建两个包含该数组引用的类。 When i change value of an element in array, i want to see the change in classes.
当我更改数组中元素的值时,我想查看类中的更改。 The reason why i want to do that is i have a array of something and i have many classes that should contain or reach this array.
我要这样做的原因是我有一些东西的数组,并且我有很多类应包含或到达此数组。 How can i do that?
我怎样才能做到这一点?
In C, i put the pointer of the array in existing structs and solve the problem but how can i do that in C#? 在C语言中,我将数组的指针放在现有的结构中并解决了问题,但是如何在C#中做到这一点呢? There is no array pointer afaik.
没有数组指针afaik。
int CommonArray[2] = {1, 2};
struct
{
int a;
int *CommonArray;
}S1;
struct
{
int b;
int *CommonArray;
}S2;
S1.CommonArray = &CommonArray[0];
S2.CommonArray = &CommonArray[0];
Thank you. 谢谢。
All arrays are reference types in C#, even if the element type of the array is a value type. 即使数组的元素类型是值类型,所有数组也是C#中的引用类型。 So this will be fine:
这样就可以了:
public class Foo {
private readonly int[] array;
public Foo(int[] array) {
this.array = array;
}
// Code which uses the array
}
// This is just a copy of Foo. You could also demonstrate this by
// creating two separate instances of Foo which happen to refer to the same array
public class Bar {
private readonly int[] array;
public Bar(int[] array) {
this.array = array;
}
// Code which uses the array
}
...
int[] array = { 10, 20 };
Foo foo = new Foo(array);
Bar bar = new Bar(array);
// Any changes to the contents of array will be "seen" via the array
// references in foo and bar
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