该对象是否存在?
下面的两个示例将给出相同的结果。
using UnityEngine;
public class Example : MonoBehaviour { // check if there is a rigidbody attached to this transform void Start() { if (GetComponent<Rigidbody>()) { Debug.Log("Rigidbody attached to this transform"); } } }
...等同于...
using UnityEngine;
public class Example : MonoBehaviour { // check if there is a rigidbody attached to this transform void Start() { if (GetComponent<Rigidbody>() != null) { Debug.Log("Rigidbody attached to this transform"); } } }