Object.operator ==

参数

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;
        
    }
}

与 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.