Turn off castShadow in Unity5

Hi everyone. Im trying to turn off castShadow in some gameObject. But i dont know how can i do it. In Unity4 works like this:

 public class TurnOnLights : MonoBehaviour {
 
     public GameObject[] objs;
 
     void Start () {
         for (int i = 0; i < objs.Length; i++)
         {
             objs[i].GetComponent<MeshRenderer>().castShadow = false;
             objs[i].GetComponent<Renderer>().castShadow = false;
         }
         
     }
 }