Version: 2021.1

描述

该对象是否存在?

The three examples below give the same result.

using UnityEngine;

public class Example : MonoBehaviour { // check if there is a rigidbody attached to this transform void Start() { if (GetComponent<Rigidbody>() == true) { 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>()) { Debug.Log("Rigidbody attached to this transform"); } } }

...which is also the same as this...

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"); } } }
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