public static bool operator == (Object x, Object y);

参数

x第一个对象。
y要与第一个对象进行比较的对象。

描述

比较两个对象引用,判断它们是否引用同一个对象。

no example available in C#

如果没有目标,则及早退出。

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour { public Transform target; void Update() { if (target == null) return; } }

null 进行比较时要小心。

例如:

GameObject go = new GameObject();
Debug.Log (go == null); // false

Object obj = new Object(); Debug.Log (obj == null); // true

Instatiating a GameObject adds it to the scene so its completely initialized (!destroyed). Instantiating a simple UnityEngine.Object has no such semantics, so the it stays in the 'destroyed' state which compares true to null.