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Question by tapirlaut · Mar 15, 2016 at 02:05 PM · c#lists

Is it possible to make a List into another List? C#

 using System.Collections.Generic;
 
     List<float> holdAllThreeList = new List<float>();
     List<float> listOne = new List<float>();
     List<float> listTwo = new List<float>();
     List<float> listThree = new List<float>();
     
     void Start()
     {
         holdAllThreeList.Add(listOne);
         holdAllThreeList.Add(listTwo);
         holdAllThreeList.Add(listThree);
     }

But I got 2 errors which is:

 1. The best overloaded method match for `System.Collections.Generic.List<float>.Add(float)' has some invalid arguments
     
 2. Argument `#1' cannot convert `System.Collections.Generic.List<float>' expression to type `float'
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Answer by Chimera91 · Mar 15, 2016 at 02:55 PM

On line 3:

  List<float> holdAllThreeList = new List<float>();

You are setting the list to accept floats only.

When creating a list of lists you need to explicitly say it needs to be in the format of [List of floats]:

    List<List<float>> holdAllThreeList = new List<List<float>>();
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Answer by Positive7 · Mar 15, 2016 at 02:56 PM

 using UnityEngine;
 using System.Collections;
 using System.Collections.Generic;
 
 public class asd2 : MonoBehaviour
 {
 
     public List<float> holdAllThreeList = new List<float>();
     public List<float> listOne = new List<float>();
     public List<float> listTwo = new List<float>();
     public List<float> listThree = new List<float>();
 
     void Start()
     {
         StartCoroutine(AddList(listOne));
         StartCoroutine(AddList(listTwo));
         StartCoroutine(AddList(listThree));
     }
 
 
     IEnumerator AddList(List<float> list)
     {
        foreach(float i in list)
         {
             holdAllThreeList.Add(i);
         }
         yield return new WaitForEndOfFrame();
     }
 }
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