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Question by RevivedBear · Jan 07, 2018 at 05:40 PM · loopintarraylist

Unity adding element to 2D array list

I have an array list chunkData and need to add values with an index using a for loop:

 List<int[,]> chunkData = new List<int[,]>(); 
 for (int i=0;i<=x;i++){
     for (int j=0;j<=y;j++){
         chunkData[i,j] = GetChunkPointData(i,j);
     }
 }

I am being thrown the error "no overload method for this takes 2 arguments"

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avatar image ShadyProductions · Jan 07, 2018 at 06:11 PM 0
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GetChunkPointData method cannot take 2 argument i and j..

Can you share your GetChunkPointData method.

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Answer by Creatom_Games · Jan 07, 2018 at 06:31 PM

Try using a Hashtable. It's another kind of list which takes a key and a value, the key being the index.

 Hashtable chunkData = new Hashtable();
 for(int i = 0; i <= x; i++){
       for(int j = 0; j <=y; j++){
          chunkData.Add(i, j);
           
       }
 }
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avatar image RevivedBear · Jan 07, 2018 at 06:48 PM 0
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the problem with doing that I discovered is that at the index of i and j I need to get a specific value retrieved by a function; basically, I would need to do chunkData[i][j] = SpecificValue(i,j). How would I implement that here

avatar image ShadyProductions RevivedBear · Jan 07, 2018 at 07:33 PM 0
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We cannot know that because we don't know how your specific values are setup. As i've mentioned in my comment above.

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Answer by YoucefB · Jan 07, 2018 at 09:44 PM

@RevivedBear

     List<List<int>> chunkData = new List<List<int>>(); // this is how you define a 2d generic List.
      for (int i=0;i<=x;i++){
          chunkData.Add(new List<int>());
          for (int j=0;j<=y;j++){
              chunkData[i].Add(GetChunkPointData(i,j));
          }
      }






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