用Unity/C# Assert解决NullPointerException的一种方法

 using UnityEngine;

    
 using UnityEngine.Assertions;
    
  
    
 public class AssertionExampleClass : MonoBehaviour
    
 {
    
     public int health;
    
     public GameObject go;
    
  
    
     void Update()
    
     {
    
     // You expect the health never to be equal to zero
    
     Assert.AreNotEqual(0, health);//当变量health的值不为0的时候，可以正常运行，否则报错
    
  
    
     // The referenced GameObject should be always (in every frame) be active
    
     Assert.IsTrue(go.activeInHierarchy);//当go.activeInHierarchy实体的属性activeInHierarchy为true真的时候，可以正常运行，否则就会报错。