C# // References to different Array Elements

Hi everyone,

eg I like to have 3 arrays for example A[], B[] C[]. Now I like to have references in C[] to elements of A[] and elements of B[].

C[0] = reference to A[2]
C[1] = reference to A[0]
C[2] = reference to B[0]
C[3] = reference to B[1]
C[4] = reference to B[4]

C[] should contain references and no data copy.
If I change C[3] = 99 it should change B[1] to 99 as well.

Does anyone have some lines of example code to solve this in unity?
Thank you.

 

A possible solution to that is to write your own wrapper:

Code (CSharp):

1. public class RefValue<T> {
2.     public T value;
3.  
4.     public RefValue(T value) {
5.         this.value = value;
6.     }
7.  
8.     public override string ToString() {
9.         return value.ToString();
10.     }
11. }
12.  
13. public class Testt : MonoBehaviour {
14.  
15.     RefValue<int>[] A = new RefValue<int>[5];
16.     RefValue<int>[] B = new RefValue<int>[5];
17.     RefValue<int>[] C = new RefValue<int>[5];
18.  
19.     public void OnEnable() {
20.         for(int i = 0; i < 5; i++) {
21.             A[i] = new RefValue<int>(i);
22.             B[i] = new RefValue<int>(i + 5);
23.         }
24.  
25.         C[0] = A[2];
26.         C[1] = A[0];
27.         C[2] = B[0];
28.         C[3] = B[1];
29.         C[4] = B[4];
30.  
31.         string str="";
32.  
33.         Debug.Log("Before modifying references:");
34.         for(int i = 0; i < 5; i++) {
35.  
36.             str += string.Format("A[{0}]= {1}, ", i, A[i]);
37.             str += string.Format("B[{0}]= {1}"  , i, B[i]);
38.             str += System.Environment.NewLine;
39.         }
40.         Debug.Log(str);
41.  
42.         for(int i = 0; i < 5; i++) {
43.             C[i].value = 99;
44.         }
45.  
46.         Debug.Log("After modifying references:");
47.         str = "";
48.         for(int i = 0; i < 5; i++) {
49.             str += string.Format("A[{0}]= {1}, ", i, A[i]);
50.             str += string.Format("B[{0}]= {1}", i, B[i]);
51.             str += System.Environment.NewLine;
52.         }
53.         Debug.Log(str);
54.     }
55. }

 

Thank you!