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Object.operator ==

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

Parameters

xThe first Object.
yThe Object to compare against the first.

Description

Compares two object references to see if they refer to the same object.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour { public Collider target; void OnTriggerEnter(Collider trigger) { if (trigger == target) print("We hit the target trigger"); } }

Get early out if there is no target.

using UnityEngine;
using System.Collections;

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

Be careful when comparing with null.

e.g.

Instatiating a GameObject adds it to the scene so it's 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.

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